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Ransomware
Breach Compliance Cybersecurity Data Breach DaVita dialysis Healthcare Hospital incident ITsecurity patientcare Ransomware

DaVita Faces Ransomware Attack, Disrupting Some Operations but Patient Care Continues

 

Denver-headquartered DaVita Inc., a leading provider of kidney care and dialysis services with more than 3,100 facilities across the U.S. and 13 countries, has reported a ransomware attack that is currently affecting parts of its network. The incident, disclosed to the U.S. Securities and Exchange Commission (SEC), occurred over the weekend and encrypted select portions of its systems.

"Upon discovery, we activated our response protocols and implemented containment measures, including proactively isolating impacted systems," DaVita stated in its SEC filing.

The company is working with third-party cybersecurity specialists to assess and resolve the situation, and has also involved law enforcement authorities. Despite the breach, DaVita emphasized that patient care remains ongoing.

"We have implemented our contingency plans, and we continue to provide patient care," the company noted. "However, the incident is impacting some of our operations, and while we have implemented interim measures to allow for the restoration of certain functions, we cannot estimate the duration or extent of the disruption at this time," the company said.

With the investigation still underway, DaVita acknowledged that "the full scope, nature and potential ultimate impact on the company are not yet known."

Founded 25 years ago, DaVita reported $12.82 billion in revenue in 2024. The healthcare giant served over 281,000 patients last year across 3,166 outpatient centers, including 750+ hospital partnerships. Of these, 2,657 centers are in the U.S., with the remaining 509 located in countries such as Brazil, Germany, Saudi Arabia, Singapore, and the United Kingdom, among others. DaVita also offers home dialysis services.

Security experts warn that the scale of the incident could have serious implications.

"There is potential for a very large impact, given DaVita’s scale of operations," said Scott Weinberg, CEO of cybersecurity firm Neovera. "If patient records were encrypted, sensitive data like medical histories and personal identifiers might be at risk. DaVita has not reported data exfiltration, so it’s not clear if data was stolen or not."

Weinberg added, "For dialysis patients needing regular treatments to survive, this attack is extremely serious. Because of disrupted scheduling or inaccessible records, this could lead to health complications. Ransomware disruptions in healthcare may lead to an increase in mortality rates, especially for time-sensitive treatments such as dialysis."

The breach may also bring regulatory challenges due to DaVita’s international footprint.

"Regulations can differ with respect to penalties and reporting requirements after a breach based on the country and even the state in which the patients live or were treated," said Erich Kron, security awareness advocate at KnowBe4.

"A serious cybersecurity incident that affects individuals in multiple countries can be a legal nightmare for some organizations," Kron said. "However, this is something that organizations should plan for and be prepared for prior to an event ever happening. They should already know what will be required to meet regulatory standards for the regions in which they operate."

In a separate statement to Information Security Media Group, DaVita added, "We have activated backup systems and manual processes to ensure there's no disruption to patient care. Our teams, along with external cybersecurity experts, are actively investigating this matter and working to restore systems as quickly as possible."

This cyberattack mirrors similar recent disruptions within the healthcare industry, which continues to be a frequent target.

"The healthcare sector is always considered a lucrative target because of the serious sense of urgency whenever IT operations are disrupted, not to mention potentially disabled," said Jeff Wichman, director of incident response at Semperis. "In case of ransomware attacks, this serves as another means to pressure the victim into paying a ransom."

He added, "At this time, if any systems administering dialysis have been disrupted, the clinics and hospitals within DaVita’s network are most certainly operating machines manually as a last resort and staff are working extremely hard to ensure patient care doesn’t suffer. If any electronic machines in their network are down, the diligence of staff will fill the gaps until electronic equipment is restored."

DaVita joins a growing list of specialized healthcare providers facing cybersecurity breaches in 2025. Notably, Community Care Alliance in Rhode Island recently reported a hack that impacted 115,000 individuals.

In addition, DaVita has previously disclosed multiple health data breaches. The largest, in July 2024, affected over 67,000 individuals due to unauthorized server access linked to the use of tracking pixels in its patient-facing platforms.
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VPN
At-Bay Cyber Security CyberCrime Cyberhackers CyberThreat Digital Threat RaaS Ransomware remote access VPN

Increasing Exploitation of Remote Access Tools Highlights Ransomware Risks

 


Among the latest findings from cybersecurity insurance provider At-Bay, ransomware incidents witnessed a significant resurgence in 2024, with both the frequency and the severity of these attacks escalating significantly. Based on the firm's 2025 InsurSec Report, ransomware activity rose 20 percent from the previous year, returning to the high level of threat that had been experienced in 2021, when ransomware activity soared to 20 per cent. 

There is an overwhelmingly large number of remote access tools and virtual private networks (VPNS) that have been exploited as entry points for these attacks, according to the report. In particular, mid-market organisations, particularly those with annual revenues between $25 million and $100 million, have been severely hit by this surge, with targeted incidents on the rise by 46 per cent. As a result of the At-Bay claims data, it is apparent that the severity of ransomware breaches has increased by 13 per cent year over year, highlighting how sophisticated and financially destructive these threats are becoming. 

It was also found that attacks originating from third parties, such as vendors and service providers, have increased by 43 per cent, compounding the risk. It is also important to note that the economic toll of these supply chain-related incidents increased by 72 per cent on average, which increased the overall cost associated with them. This study highlights the need to reassess the cybersecurity postures of businesses, especially those that are reliant on remote access infrastructure, as well as strengthen defences across the entire digital ecosystem. 

A study published by At-Bay highlights the widespread misuse of conventional cybersecurity tools, particularly those intended to enhance remote connectivity, as well as the deterioration of the effectiveness of traditional cybersecurity tools. Virtual private networks (VPNS) and remote access software, which are frequently deployed to ensure secure access to internal systems from off-site, are increasingly being repurposed as a gateway for malicious activities. 

As a matter of fact, At-Bay’s analysis illustrates a concerning trend that threatens the flexibility of work environments. Threat actors are frequently exploiting these same tools to get access to corporate networks, extract sensitive data, and carry out disruptive operations. Due to their visibility on the public internet, cybercriminals are actively searching for potential vulnerabilities in these systems to attack them. 

The Remote Access Tools are essentially a front door that provides access to your company's network and can typically be viewed by the general public. For that reason, remote access tools are prone to being attacked by attackers, according to Adam Tyra, Chief Information Security Officer for At-Bay's customer service department. In addition to this, the report highlights the disproportionately high risk posed by mid-sized enterprises, which generate annual revenue of between $25 million and $100 million. 

The number of direct ransomware claims has increased significantly within the segment, which highlights both the increased exposure to cyber threats as well as the potential limitations in resources available to defend against them. As part of this report, the authors point out that “remote” ransomware activity has increased dramatically, a tactic that has gained considerable traction among threat actors over the past few years. 

In 2024, this type of attack is expected to have increased by 50 per cent compared to the year before, representing an astounding 141 per cent increase since the year 2022. As far as traditional endpoint detection systems are concerned, remote ransomware campaigns are typically carried out by unmanaged or personal devices. In these kinds of attacks, rather than deploying a malicious payload directly onto the victim's machine, networks file-sharing protocols are used to access and encrypt data between connected systems by using the network file-sharing protocol. Therefore, the encryption process is often undetected by conventional security tools, such as malware scanners and behaviour-based defences. 

These stealth-oriented methodologies pose a growing challenge to organizations, particularly small and medium-sized businesses (SMBS), as a result of this stealth-oriented methodology. In the study conducted by Sophos Managed Detection and Response (MDR), the most common threat vector in the SMB sector is ransomware and data exfiltration, which accounted for nearly 30 per cent of all cases tracked within this sector. 

Even though sophisticated attack techniques are on the rise, the overall volume of ransomware-related events in 2024 saw a slight decline in volume compared with 2023 despite the rise in sophisticated attack techniques. There has been a marginal decrease in ransomware-as-a-service (Raas) incidents. 

The advancement of defensive technologies and the dismantling of several of the most high-profile ransomware-as-a-service (Raas) operations have both contributed to this decline. This combined study emphasises the urgent need for businesses to modernise their cybersecurity strategies, invest in proactive threat detection, and strengthen the security of their remote access infrastructure to combat cybercrime. 

With the development of ransomware tactics in complexity and scale, the resilience of organisations targeted by these threats has also evolved. As a result of these developments, organisations are increasingly expected to reevaluate their risk management frameworks to adopt a more proactive cybersecurity policy. To ensure that a robust defense strategy is implemented, it is imperative that remote access security systems are secured and access controls are implemented and advanced monitoring capabilities are deployed. 

Besides raising awareness of cybersecurity throughout the workforce and fostering close cooperation between technology and insurance partners, it is also possible to significantly reduce the risk of ransomware being a threat to organisations. In the wake of cyber adversaries that keep improving their methods, businesses will have to take not only technical measures to strengthen their resilience, but also a wide range of strategic measures to anticipate and neutralise emergent attack vectors before they can cause significant damage.
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VPN
Breach Cyber Security DomainControllers Hackers Ransomware Reconnaissance VPN

Majority of Human-Operated Cyberattacks Target Domain Controllers, Warns Microsoft

 

Microsoft has revealed that nearly 80% of human-operated cyberattacks involve compromised domain controllers, according to a recent blog post published on Wednesday. Alarmingly, in over 30% of these incidents, attackers use the domain controller—a central system in corporate IT networks—to spread ransomware across the organization.

A breached domain controller can give hackers access to password hashes for every user in the system. With these credentials, cybercriminals can identify and exploit privileged accounts, including those held by IT administrators. Gaining control of these accounts allows attackers to escalate their access levels.

"This level of access enables them to deploy ransomware on a scale, maximizing the impact of their attack," Microsoft stated.

One such attack, observed by the tech giant, involved a group known as Storm-0300. The hackers infiltrated a company’s systems by exploiting its virtual private network (VPN). After acquiring administrator credentials, they tried to access the domain controller through the remote desktop protocol (RDP). Once inside, they carried out a series of actions including reconnaissance, bypassing security measures, and escalating their privileges.

Despite the growing frequency of attacks, Microsoft emphasized the difficulty in protecting domain controllers due to their critical role in network management and authentication.

Defenders often face the challenge of “striking the right balance between security and operational functionality,” the blog noted.

To improve protection, Microsoft suggested enhancing domain controllers’ ability to differentiate between legitimate and malicious activity—an essential step toward minimizing server compromises.

Jason Soroko, senior fellow at cybersecurity firm Sectigo, stressed the importance of proactive security measures.

"Ultimately, even the most advanced defense mechanisms may falter if misconfigured or if legacy systems create vulnerabilities. Hence, vigilant customer-side security practices are critical to fortifying these systems against modern cyberthreats," Sectigo said.

While Microsoft offers strong protective tools, their success hinges on users maintaining up-to-date systems and activating features like multifactor authentication.


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Ransomware
Cyber Crime Everest Gang Hackers Personal Data Ransomware

Cybercriminal Group's Website Taken Over by Unknown Hacker

 


A criminal group known for using ransomware was recently caught off guard when its own website was tampered with. The website, which the gang normally uses to publish stolen data from their victims, was replaced with a short message warning against illegal activity. The message read: “Don’t do crime. CRIME IS BAD. xoxo from Prague.” What a sneaky way to reference gossip girl, isn't it? 

At the time of this report, the website remained altered. It is not yet known if the person or group behind the hack also accessed any files or data belonging to the ransomware gang.

The group, known by the name Everest, has been involved in several cyberattacks since it first appeared in 2020. It is believed to be based in Russia. Over the years, Everest has taken credit for stealing large amounts of data, including information from a popular cannabis store chain, which affected hundreds of thousands of customers. Government agencies in the United States and Brazil have also been listed among their victims.

Ransomware attacks like these are designed to scare companies and organizations into paying money in exchange for keeping their private information from being made public. But recent reports suggest that fewer victims are giving in to the demands. More businesses have started refusing to pay, which has made these attacks less profitable for criminals.

While international law enforcement agencies have had some success in shutting down hacking groups, Everest has managed to stay active. However, this incident shows that even experienced cybercriminals are not safe from being attacked themselves. Some believe this could have been done by a rival group, or possibly even someone from within the gang who turned against them.

It’s also not the first time that cybercrime groups have been sabotaged. In the past few years, other well-known ransomware gangs have faced setbacks due to both police actions and internal leaks.

This unusual case is forces us to face the inevitable reality that no one is completely untouchable online. Whether it’s a company or a hacker group, all digital systems can have weak points. People and organizations should always keep their online systems protected and stay alert to threats.

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WhiteHat
Compliance Cyber Security Encryption EthicalHacking Firewalls PenTesting Ransomware Vulnerabilities WhiteHat

Ethical Hacking: The Cyber Shield Organizations Need

 

Ethical hacking may sound paradoxical, but it’s one of the most vital tools in modern cyber defence. Known as white hat hackers, these professionals are hired by companies to simulate cyberattacks, uncover vulnerabilities, and help fix them before malicious actors can strike.

“Ethical hackers mimic real-world threats to identify and patch security flaws. It’s about staying a step ahead of the bad guys,” says a cybersecurity expert.

As cyber threats surge globally, ethical hackers are in high demand. A recent Check Point Software report revealed a staggering 44% rise in global cyberattacks. From ransomware gangs to state-sponsored intrusions, the risks are growing—and the need for skilled defenders is greater than ever.

The ethical hacking process begins with reconnaissance—mapping a company’s digital infrastructure. Next comes scanning and vulnerability testing, using the same techniques as criminal hackers. Once issues are identified, they’re reported, not exploited. Some ethical hackers work independently, participating in bug bounty programs for companies like Google and Microsoft.

Industries like finance, healthcare, and tech—where sensitive data is a prime target—rely heavily on ethical hackers. Their techniques include penetration testing, system and network hacking, internal assessments, and web application testing.

In 2019, a team at Positive Technologies uncovered a Visa card flaw that could’ve allowed contactless payments to exceed set limits—just one example of ethical hacking saving the day.

Penetration testing simulates real breaches, such as injecting code, overloading systems, or intercepting data. System hacking targets devices with tools to crack passwords or exploit system weaknesses. Internal testing flags human errors, like weak credentials or poor security training. Web app testing scans for issues like XSS or SQL injections before launch. Network hacking exposes flaws in protocols, open ports, or wireless vulnerabilities.

The biggest advantage? Ethical hackers reveal blind spots that internal teams might miss. They prevent data breaches, build customer trust, and ensure compliance with regulatory standards—saving organizations from reputational and financial harm.

“Finding flaws isn’t enough. Ethical hackers offer the roadmap to fix them—fast,” a security analyst shares.

With the right skills, anyone can break into this field—often with significant rewards. Major companies offer million-dollar payouts through bug bounty programs. Many ethical hackers hold certifications like CEH, OSCP, or CySA+, with backgrounds ranging from military service to degrees in computer science.

The term “hacker” doesn’t always mean trouble. Ethical hackers use the same tools as their criminal counterparts—but to protect, not exploit. In today’s digital battlefield, they’re the unsung heroes safeguarding the future.


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Ransomware
Data Theft Hunters International malware Ransomware

Cybercrime Group Changes Plans: Drops Ransomware, Focuses on Data Theft

 



A cybercriminal group known for ransomware attacks has decided to stop using those methods and instead focus only on stealing information and demanding money in return. The group, called Hunters International, has rebranded and is now running a new operation.

This group had earlier announced in November 2024 that it would stop its activities. They claimed it was because of low profits and growing attention from police and other authorities. But cybersecurity experts discovered that the group didn’t actually stop – they just changed their approach.

Now, under a new name, World Leaks, the group has returned. Instead of locking people’s files and asking for payment to unlock them, they now secretly steal private data from computers and threaten to release it online unless they’re paid.

According to cybersecurity researchers at Group-IB, the people working with this group are being given a special tool. This software helps them quickly and quietly copy important files from an organization’s systems. It’s believed to be a newer version of a tool they’ve used in the past.

In their earlier version, Hunters International combined two actions: they locked systems (ransomware) and demanded money, and also stole data. But now, they are only stealing data and skipping the system lockout part, which brings less risk and may be harder for authorities to detect.

Hunters International first appeared in late 2023 and was suspected to be connected to an older cyber gang called Hive. Their malware could attack many types of computer systems, including those used by businesses, governments, and servers for virtual machines.

Since then, the group has been behind over 280 attacks on organizations across the globe. They’ve gone after major companies, government bodies, hospitals, and even defense-related firms. In one serious case, they threatened to release personal health records of over 800,000 patients if they weren’t paid.

The group has been targeting companies of all sizes. Experts have seen ransom demands vary, sometimes reaching millions, depending on how large or important the organization is.

Experts say that this shift shows how cybercriminals are always changing tactics to stay ahead. With ransomware becoming riskier and less profitable, many groups may now turn to stealing data as their main method.

To stay safe, organizations should improve their security systems, watch for unusual access, and take steps to protect sensitive data before it’s too late.


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Ransomware
Cyberattacks Data Privacy Private Information quiet ransomware Ransomware

The Growing Danger of Hidden Ransomware Attacks

 


Cyberattacks are changing. In the past, hackers would lock your files and show a big message asking for money. Now, a new type of attack is becoming more common. It’s called “quiet ransomware,” and it can steal your private information without you even knowing.

Last year, a small bakery in the United States noticed that their billing machine was charging customers a penny less. It seemed like a tiny error. But weeks later, they got a strange message. Hackers claimed they had copied the bakery’s private recipes, financial documents, and even camera footage. The criminals demanded a large payment or they would share everything online. The bakery was shocked— they had no idea their systems had been hacked.


What Is Quiet Ransomware?

This kind of attack is sneaky. Instead of locking your data, the hackers quietly watch your system. They take important information and wait. Then, they ask for money and threaten to release the stolen data if you don’t pay.


How These Attacks Happen

1. The hackers find a weak point, usually in an internet-connected device like a smart camera or printer.

2. They get inside your system and look through your files— emails, client details, company plans, etc.

3. They make secret copies of this information.

4. Later, they contact you, demanding money to keep the data private.


Why Criminals Use This Method

1. It’s harder to detect, since your system keeps working normally.

2. Many companies prefer to quietly pay, instead of risking their reputation.

3. Devices like smart TVs, security cameras, or smartwatches are rarely updated or checked, making them easy to break into.


Real Incidents

One hospital had its smart air conditioning system hacked. Through it, criminals stole ten years of patient records. The hospital paid a huge amount to avoid legal trouble.

In another case, a smart fitness watch used by a company leader was hacked. This gave the attackers access to emails that contained sensitive information about the business.


How You Can Stay Safe

1. Keep smart devices on a different network than your main systems.

2. Turn off features like remote access or cloud backups if they are not needed.

3. Use security tools that limit what each device can do or connect to.

Today, hackers don’t always make noise. Sometimes they hide, watch, and strike later. Anyone using smart devices should be careful. A simple gadget like a smart light or thermostat could be the reason your private data gets stolen. Staying alert and securing all devices is more important than ever.


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Zoom
BlackSuit Cyberattack Encryption malware phishing Ransomware Zoom

Fake Zoom Download Sites Spreading BlackSuit Ransomware, Experts Warn

 

A new cyberattack campaign is targeting Zoom users by disguising ransomware as the popular video conferencing tool, according to Cybernews. Researchers from DFIR have uncovered a scheme by the BlackSuit ransomware gang, which uses deceptive websites to distribute malicious software.

Instead of downloading Zoom from the official site, unsuspecting users are being lured to fraudulent platforms that closely mimic the real thing. One such site, zoommanager[.]com, tricks users into installing malware. Once downloaded, the BlackSuit ransomware remains dormant for several days before launching its full attack.

The malware first scrapes and encrypts sensitive personal and financial data. Then, victims are presented with a ransom demand to regain access to their files.

BlackSuit has a history of targeting critical infrastructure, including schools, hospitals, law enforcement, and public service systems. The ransomware begins by downloading a malicious loader, which can bypass security tools and even disable Windows Defender.

Researchers found that the malware connects to a Steam Community page to fetch the next-stage server, downloading both the legitimate Zoom installer and malicious payload. It then injects itself into a MSBuild executable, staying inactive for eight days before initiating further actions.

On day nine, it executes Windows Commands to collect system data and deploys Cobalt Strike, a common hacker tool for lateral movement across networks. The malware also installs QDoor, allowing remote access through a domain controller. The final phase involves compressing and downloading key data before spreading the ransomware across all connected Windows systems. Victims’ files are locked with a password, and a ransom note is left behind.

Cybersecurity experts stress the importance of downloading software only from official sources. The genuine Zoom download page is located at zoom[.]us/download, which is significantly different from the deceptive site mentioned earlier.

"Zoom isn't nearly as popular with hackers now as it was a few years ago but given how widely used the service is, it's an easy way to target unsuspecting users online."

To protect against these kinds of attacks, users should remain vigilant about phishing tactics, use reputable antivirus software, and ensure it stays updated. Many modern antivirus tools now offer VPNs, password managers, and multi-device protection, adding extra layers of security.

"As well as making sure you're always downloading software from the correct source, make sure you are aware of common phishing techniques and tricks so you can recognize them when you see them."

It’s also recommended to manually navigate to software websites instead of clicking links in emails or search results, reducing the risk of accidentally landing on malicious clones.
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Third party breaches
Companies Data Breaches Ransomware Third party breaches

The Growing Danger of Third-Party Security Risks

 


A new study has surfaced a major cybersecurity concern for businesses: security vulnerabilities from third-party partners. According to a recent report by SecurityScorecard, more than a third of all data breaches in 2024 were linked to third-party service providers.


Underreported Threats

The research examined 1,000 cybersecurity incidents across different industries and regions. It found that 35.5% of breaches were due to third-party security weaknesses. However, experts believe the real number may be even higher due to many incidents being misclassified or not reported.


High-Risk Sectors

The report also revealed that the nature of these attacks is changing. In 2025, fewer third-party breaches involved technology services than in previous years. Only 46.75% of such breaches were linked to tech-related businesses, a decline from 75% the year before. This means cybercriminals are targeting a broader range of industries.

Among the most affected industries were retail and hospitality, which experienced the highest rate of third-party security breaches at 52.4%. The technology sector followed closely at 47.3%, while energy and utility companies saw a 46.7% breach rate. Even though the healthcare industry had a lower percentage of breaches (32.2%), it faced the highest total number of attacks, with 78 incidents recorded.


Global Hotspots for Third-Party Breaches

Certain countries saw a higher frequency of breaches. Singapore reported the most third-party cyber incidents, with 71.4% of breaches originating from external vendors. The Netherlands followed at 70.4%, while Japan recorded 60%.

The report also pointed out that ransomware groups are increasingly exploiting third-party connections to gain access to their targets. More than 41.4% of ransomware attacks now originate through a compromised third-party vendor. The notorious Cl0p ransomware gang has been particularly active in using this method.


Strengthening Security Measures

Cybercriminals favor third-party breaches because they allow access to multiple organizations at once. Security experts warn that businesses need to move away from occasional security checks of their vendors and instead implement continuous monitoring. By keeping a close watch on external partners' security measures, companies can reduce the risk of cyber threats before they escalate into major breaches.





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vulnerabledrivers
Cyber Attacks Cybersecurity Darkweb EDR endpointsecurity ESET Ransomware ransomware-as-a-service vulnerabledrivers

Rise in EDR Killers Signals Growing Threat to Ransomware Detection Systems

 

EDR killers are becoming an increasingly favored tool among ransomware-as-a-service (RaaS) affiliates, with EDRKillShifter emerging as a notable threat. According to a recent report by ESET malware researchers Jakub Souček and Jan Holman, the tool is not alone—there has been a noticeable rise in the variety of EDR killers being used by attackers.

“However, it is not the only EDR killer out there; in fact, ESET researchers have observed an increase in the variety of EDR killers used by ransomware affiliates,” Souček and Holman wrote in the report.

These tools are designed to bypass endpoint detection and response (EDR) solutions that can typically recognize and block encryption payloads used in ransomware attacks. To remain undetected, affiliates rely on EDR killers, which presents a major hurdle for both cybersecurity vendors and internal IT security teams.

ESET’s defense approach includes flagging vulnerable drivers exploited by these tools as potentially unsafe, preventing their activation. The researchers urged organizations to implement similar protective measures.

They referenced the Living Off The Land Drivers (LOLD) project, which tracks over 1,700 vulnerable drivers. However, only a small subset of these are exploited for EDR killer activity, and that number has remained largely consistent.

Identifying and neutralizing these drivers remains a technical challenge. ESET’s analysis highlights how many EDR killers use obfuscated code to dodge early-stage detection. In particular, RansomHub’s EDRKillShifter conceals its shellcode using a 64-character password.

“Without the password, security researchers can neither retrieve the list of targeted process names nor the abused vulnerable driver,” they wrote in the report.

Due to its effectiveness, EDRKillShifter has been adopted by a growing number of affiliates associated with rival ransomware groups since it was released as a service on the dark web.

ESET researchers said they saw a “steep increase” in activity following the release.
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SaaS Ransomware
2FA Cyber crimes Operational Technology Ransomware SaaS Ransomware

Ransomware Attacks Are Increasing— How Hackers Are Adapting

 



Cybercriminals are finding new ways to launch ransomware attacks, and recent reports show a major increase in these incidents. The latest warning from security experts highlights how hackers are evolving their tactics, making these threats more dangerous than ever.  


Ransomware Attacks Have Risen Sharply  

The number of ransomware attacks has grown in early 2025, with reports showing a 132% increase compared to late 2024. At the same time, a specific type of scam known as deepfake phishing—where AI is used to trick people into giving away sensitive information—has surged by more than 1,600%. These scams often lead to ransomware infections, as hackers use them to gain access to private systems.  

Although many organizations have improved their cybersecurity measures, hackers are adapting. Cybercriminals are focusing on new methods to steal information, including bypassing two-factor authentication (2FA). In many cases, they intercept security codes or hijack login sessions, allowing them to enter accounts without needing passwords.  


Hackers Are Targeting More Systems  

A growing concern is that cybercriminals are now attacking systems that control important operations, such as industrial machines and corporate networks. These systems, known as operational technology (OT) environments, are becoming frequent targets for ransomware groups.  

Security researchers from Ontinue warn that cybercriminals are not just trying to lock files and demand payments— they are using artificial intelligence (AI) and legitimate tools to break into networks without being detected. Instead of relying solely on traditional phishing emails, hackers now interact with IT staff, tricking them into sharing confidential details that can be used for future attacks.  


Ransom Payments Are Declining— But The Threat Isn’t  

One positive trend is that fewer companies are paying ransom demands. Recent studies show that overall payments have dropped by 35%. This is partly due to stronger law enforcement efforts, international cooperation, and organizations refusing to give in to extortion.  

However, experts warn that this might not last. Cybercriminals are constantly adjusting their methods. Instead of just encrypting files, many ransomware groups now steal sensitive data and threaten to leak it unless victims pay up. Some hackers even demand multiple payments—one to prevent data from being leaked, another to unlock encrypted files, and sometimes an additional ransom for other threats.  


The Future of Ransomware Attacks  

Security professionals are seeing a shift in how ransomware works. Hackers are no longer just sending out mass phishing emails. They are carefully studying security systems, looking for vulnerabilities, and even using software-as-a-service (SaaS) platforms to deliver attacks.  

Experts recommend that businesses and individuals take extra precautions. Strengthening cybersecurity defenses, keeping software updated, and being cautious of unexpected emails or messages can help prevent falling victim to these evolving threats.

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VanHelsing
AR CyberCrime CyberThreat ESXi Platforms Google Window malware Ransomware VanHelsing

VanHelsing Ransomware Strikes Windows ARM and ESXi Platforms

 


As part of an ongoing analysis of ransomware-as-a-service operations, a new operation known as VanHelsing has been identified. This operation demonstrates a sophisticated multi-platform capability, posing a significant cybersecurity threat. This new strain of ransomware is designed to be able to compromise a wide range of systems, including Windows, Linux, BSD, ARM and ESXi, highlighting how adaptable and powerful the malware is.

During the spring of 2025, VanHelsing became highly visible in underground cybercriminal forums, where it was actively promoted to potential affiliates. The most significant aspect of the program was the fact that experienced cybercriminals were given free access, while those with less expertise were required to pay a $5,000 deposit as a condition to participate. In this case, the targeted recruitment strategy seems to be a calculated one to attract both seasoned and aspiring threat actors to expand the scope of the ransomware's operational capabilities. 

A few weeks back, cybersecurity firm CYFIRMA first revealed the existence of VanHelsing, providing insight into its emergence and early stages. The findings of Check Point Research's extensive technical analysis, published yesterday in the journal Security Research, provide a more in-depth understanding of the ransomware's mechanics as well as its operational framework, which was published following this discovery. It has become apparent that VanHelsingRaaS is spreading rapidly, raising serious concerns among cybersecurity professionals. 

Just two weeks after the ransomware launched, three confirmed victims of the ransomware have been successfully compromised. This virus has already gone through further development and has already been redeveloped into a more advanced version. The speed at which it has developed highlights how powerful it could become within the cyber threat landscape, and it warrants security professionals around the world to be vigilant and take proactive measures to combat it. 

While the ransomware is still evolving, multiple infections have already been detected, which indicates that it has been deploying rapidly in real-world attacks. To investigate several variants, which have so far been restricted to the Windows platform, cybersecurity researchers have conducted an in-depth examination. All of these variants have been identified as being based on Windows. A notable aspect of the malware is that it has been improved incrementally with each subsequent iteration, which suggests that the malware is constantly being improved. 

It is clear from the frequent updates and rapid progress of the ransomware that the developers are committed to expanding their capabilities, and this raises concerns regarding its potential impact as the ransomware matures. According to the available evidence, VanHelsing ransomware was first found in the wild on March 16, when the ransomware was first detected in the wild. To secure the files within this malware, a 32-byte (256-bit) symmetric key and a 12-byte nonce are generated for each file by the ChaCha20 encryption algorithm. 

In addition, VanHelsing also encrypts these generated values with the use of an embedded Curve25519 public key to further enhance its encryption processes. These encrypted keys and nonces are then embedded in the affected file to make them more secure. A notable feature of VanHelsing is its extensive command-line interface (CLI) customization that enables attackers to tailor the attack to meet the specific requirements of their target users. 

Files that exceed 1GB in size are subjected to partial encryption, while smaller files are subjected to complete encryption. As part of this method, drives and folders will be selected, encryption parameters will be set, the attack will spread via SMB protocol, shadow copy deletions will be bypassed, and evasion will be performed in a dual-phase stealth mode. VanHelsing utilizes two types of encryption to provide high levels of security. 

It is a standardized encryption technique in which it systematically enumerates directories, encrypts file content, and then renames the affected files using the ".vanhelsing" extension. On the other hand, when in stealth mode, both the encryption and file renaming are performed in separate processes, thus minimizing detection risks since the encryption process mimics normal file input/output (I/O) activity to minimize detection risk.

During the renaming phase of the data, security tools might detect anomalies, but by that time the data is already encrypted in full. However, Check Point has identified several shortcomings in its code development that have been attributed to immature development despite its advanced functionality and rapid evolution. There are many reasons for this, including inconsistency in file extensions, flaws in exclusion list logic that could lead to duplicate encryption cycles, and several command-line flags that have not been implemented yet. 

Despite VanHelsing's many technical imperfections, it remains a formidable emerging cyber threat. Considering that it is a continuously evolving threat, security professionals and organizations must keep their eyes open for potential threats associated with this ransomware variant as it is developing. In recent years, van Helsing ransomware has emerged as an extremely sophisticated cyber threat that can be used against multiple platforms, including Windows, Linux, BSD, ARM, and ESXi, and is rapidly evolving. 

With its advanced encryption techniques, extensive CLI customization, and stealth tactics, this ransomware can be a formidable weapon in the hands of cybercriminals. There is strong evidence that the ransomware is actively spread through underground forums, as well as its recruitment strategy. Security researchers have noted that it is rapidly iterating and improving, making proactive defence measures imperative. 

Although VanHelsing may have been developed with technical flaws, it remains an incredibly dangerous threat due to its ability to spread rapidly and adapt quickly. Organizations must maintain an effective cybersecurity strategy, stay informed about emerging threats, and enhance their defences to avoid potential risks. The evolving nature of this ransomware emphasizes the need.
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Vulnerabilities
Artificial Intelligence ChatGPT cybercriminals Cybersecurity Ransomware Vulnerabilities

Cybercriminals Exploit Psychological Vulnerabilities in Ransomware Campaigns

 


During the decade of 2025, the cybersecurity landscape has drastically changed, with ransomware from a once isolated incident to a full-sized global crisis. No longer confined to isolated incidents, these attacks are now posing a tremendous threat to economies, governments, and public services across the globe. There is a wide range of organizations across all sectors that find themselves exposed to increasingly sophisticated cyber threats, ranging from multinational corporations to hospitals to schools. It is reported in Cohesity’s Global Cyber Resilience Report that 69% of organizations have paid ransom demands to their suppliers in the past year, which indicates just how much pressure businesses have to deal with when such attacks happen. 

The staggering number of cybercrime cases highlights the need for stronger cybersecurity measures, proactive threat mitigation strategies and a heightened focus on digital resilience. With cybercriminals continuously improving their tactics, organizations need to develop innovative security frameworks, increase their threat intelligence capabilities, and foster a culture of cyber vigilance to be able to combat this growing threat. The cybersecurity landscape in 2025 has changed significantly, as ransomware has evolved into a global crisis of unprecedented proportions. 

The threat of these attacks is not just limited to isolated incidents but has become a significant threat to governments, industries, and essential public services. Across the board, companies of all sizes are increasingly vulnerable to cyber threats, from multinational corporations to hospitals and schools. In the last year, Cohesity released its Global Cyber Resilience Report, which revealed that 69% of organizations paid ransom demands, indicating the immense pressure that businesses face in the wake of such threats. 

This staggering figure underscores how urgent it is that we take more aggressive cybersecurity measures, develop proactive threat mitigation strategies, and increase our emphasis on digital resilience to prevent cyberattacks from taking place. Organizations must embrace new security frameworks, strengthen threat intelligence capabilities, and cultivate a culture of cyber vigilance to combat this growing threat as cybercriminals continue to refine their tactics. A persistent cybersecurity threat for decades, ransomware remains one of the biggest threats today. 

However, the first global ransom payment exceeded $1 billion in 2023, marking a milestone that hasn't been achieved in many years. Cyber extortion increased dramatically at this time, as cyber attackers constantly refined their tactics to maximize the financial gains that they could garner from their victims. The trend of cybercriminals developing increasingly sophisticated methods and exploiting vulnerabilities, as well as forcing organizations into compliance, has been on the rise for several years. However, recent data indicates a significant shift in this direction. It is believed that in 2024, ransomware payments will decrease by a substantial 35%, mainly due to successful law enforcement operations and the improvement of cyber hygiene globally.

As a result of enhanced security measures, increased awareness, and a stronger collective resistance, victims of ransom attacks have become increasingly confident they can refuse ransom demands. However, cybercriminals are quick to adapt, altering their strategies quickly to counteract these evolving defences to stay on top of the game. A response from them has been to increase their negotiation tactics, negotiating more quickly with victims, while simultaneously developing stealthier and more evasive ransomware strains to be more stealthy and evasive. 

Organizations are striving to strengthen their resilience, but the ongoing battle between cybersecurity professionals and cybercriminals continues to shape the future of digital security. There has been a new era in ransomware attacks, characterized by cybercriminals leveraging artificial intelligence in increasingly sophisticated manners to carry out these attacks. Using freely available AI-powered chatbots, malicious code is being generated, convincing phishing emails are being sent, and even deepfake videos are being created to entice individuals to divulge sensitive information or transfer funds by manipulating them into divulging sensitive information. 

By making the barriers to entry much lower for cyber-attacking, even the least experienced threat actors are more likely to be able to launch highly effective cyber-attacks. Nevertheless, artificial intelligence is not being used only by attackers to commit crimes. There have been several cases where victims have attempted to craft the perfect response to a ransom negotiation using artificial intelligence-driven tools like ChatGPT, according to Sygnia's ransomware negotiation teams. 

The limitations of AI become evident in high-stakes interactions with cybercriminals, even though they can be useful in many areas. According to Cristal, Sygnia’s CEO, artificial intelligence lacks the emotional intelligence and nuance needed to successfully navigate these sensitive conversations. It has been observed that sometimes artificial intelligence-generated responses may unintentionally escalate a dispute by violating critical negotiation principles, such as not using negative language or refusing to pay outright.

It is clear from this that human expertise is crucial when it comes to managing cyber extortion scenarios, where psychological insight and strategic communication play a vital role in reducing the potential for damage. Earlier this year, the United Kingdom proposed banning ransomware payments, a move aimed at deterring cybercriminals by making critical industries less appealing targets for cybercriminals. This proposed legislation would affect all public sector agencies, schools, local councils, and data centres, as well as critical national infrastructure. 

By reducing the financial incentive for attackers, officials hope to decrease both the frequency and severity of ransomware incidents across the country to curb the number of ransomware incidents. However, the problem extends beyond the UK. In addition to the sanctions issued by the Office of Foreign Assets Control, several ransomware groups that have links to Russia and North Korea have already been sanctioned. This has made it illegal for American businesses and individuals to pay ransoms to these organizations. 

Even though ransomware is restricted in this manner, experts warn that outright bans are not a simple or universal solution to the problem. As cybersecurity specialists Segal and Cristal point out, such bans remain uncertain in their effectiveness, since it has been shown that attacks fluctuate in response to policy changes, according to the experts. Even though some cybercriminals may be deterred by such policies, other cybercriminals may escalate their tactics, reverting to more aggressive threats or increasing their personal extortion tactics. 

The Sygnia negotiation team continues to support the notion that ransom payments should be banned within government sectors because some ransomware groups are driven by geopolitical agendas, and these goals will be unaffected by payment restrictions. Even so, the Sygnia negotiation team believes that government institutions should not be able to make ransom payments because they are better able to handle financial losses than private companies. 

Governments can afford a strong stance against paying ransoms, as Segal pointed out, however for businesses, especially small and micro-sized businesses, the consequences can be devastating if they fail to do so. It was noted in its policy proposal that the Home Office acknowledges this disparity, noting that smaller companies, often lacking ransomware insurance or access to recovery services, can have difficulty recovering from operational disruptions and reputational damage when they suffer from ransomware attacks. 

Some companies could find it more difficult to resolve ransomware demands if they experience a prolonged cyberattack. This might lead to them opting for alternative, less transparent methods of doing so. This can include covert payment of ransoms through third parties or cryptocurrencies, allowing hackers to receive money anonymously and avoid legal consequences. The risks associated with such actions, however, are considerable. If they are discovered, businesses can be subjected to government fines on top of the ransom, which can further worsen their financial situation. 

Additionally, full compliance with the ban requires reporting incidents to authorities, which can pose a significant administrative burden to small businesses, especially those that are less accustomed to dealing with technology. Businesses are facing many challenges in the wake of a ransomware ban, which is why experts believe a comprehensive approach is needed to support them in the aftermath of this ban.

Sygnia's Senior Vice President of Global Cyber Services, Amir Becker, stressed the importance of implementing strategic measures to mitigate the unintended consequences of any ransom payment ban. It has been suggested that exemptions for critical infrastructure and the healthcare industries should be granted, since refusing to pay a ransom may lead to dire consequences, such as loss of life. Further, the government should offer incentives for organizations to strengthen their cybersecurity frameworks and response strategies by creating incentives like these.

A comprehensive financial and technical assistance program would be required to assist affected businesses in recovering without resorting to ransom payments. To address the growing ransomware threat effectively without disproportionately damaging small businesses and the broader economy, governments must adopt a balanced approach that entails enforcing stricter regulations while at the same time providing businesses with the resources they need to withstand cyberattacks.
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Ransomware
Cyber Security Cybersecurity Hacking Medusa Ransomware

Authorities Warn Against Medusa Ransomware Surge

 

 
Federal agencies are urging individuals and organizations to stay vigilant against a rising ransomware threat that has affected hundreds of new victims in recent weeks. The FBI, Cybersecurity and Infrastructure Security Agency (CISA), and Multi-State Information Sharing and Analysis Center (MS-ISAC) have jointly issued an advisory detailing the tactics used by Medusa ransomware and how to mitigate its impact.

First identified in June 2021, Medusa is a ransomware-as-a-service (RaaS) variant that primarily targets critical infrastructure sectors, including healthcare, education, legal, insurance, technology, and manufacturing. Through the RaaS model, the ransomware's developers delegate attack execution to affiliates, who have collectively compromised over 300 victims in the past month alone.

Initially, Medusa operated as a closed ransomware variant, where the same group that developed the malware also carried out attacks. However, it has since evolved into an affiliate-driven model, with developers recruiting attackers from dark web forums and paying them between $100 to $1 million per job.

Cybercriminals behind Medusa employ two primary attack vectors:
  • Phishing campaigns – Fraudulent emails trick users into downloading malicious attachments or clicking harmful links.
  • Exploiting unpatched vulnerabilities – Attackers take advantage of outdated software to infiltrate company networks.

Once inside, they utilize various legitimate tools to expand their access:

  • Advanced IP Scanner and SoftPerfect Network Scanner – Used to detect exploitable network vulnerabilities.
  • PowerShell and Windows command prompt – Help compile lists of targeted network resources.
  • Remote access tools like AnyDesk, Atera, and Splashtop – Assist in lateral movement across the system.
  • PsExec – Enables execution of files and commands with system-level privileges.
To avoid detection, attackers often disable security tools using compromised or signed drivers. They also delete PowerShell history and leverage Certutil to conceal their activity.

Similar to other ransomware strains, Medusa follows a double-extortion strategy. Not only do attackers encrypt stolen data, but they also threaten to leak it publicly if the ransom is not paid. Victims typically have 48 hours to respond, after which they may be contacted via phone or email.

A Medusa data leak site displays ransom demands along with a countdown timer. If victims need more time, they can delay the data release by paying $10,000 in cryptocurrency per extra day. Meanwhile, attackers may attempt to sell the stolen data to third parties even before the timer expires.

Federal authorities recommend the following preventative measures to reduce the risk of Medusa attacks:
  • Patch vulnerabilities – Keep all operating systems, software, and firmware updated.
  • Network segmentation – Prevent attackers from moving across connected systems.
  • Traffic filtering – Restrict access to internal services from untrusted sources.
  • Disable unused ports – Close unnecessary entry points to minimize security risks.
  • Backup critical data – Store multiple copies of important files in an isolated location.
  • Enable multifactor authentication (MFA) – Secure all accounts, especially those used for webmail, VPNs, and critical systems.
  • Monitor network activity – Use security tools to detect unusual patterns and alert administrators to potential threats.
By implementing these strategies, organizations can significantly lower their chances of falling victim to Medusa ransomware and other evolving cyber threats.
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Ransomware
Black Basta Cyber Security Password Ransomware

Black Basta Hackers Use New Tool to Break Weak Passwords on Remote Systems

 



A cybercriminal group called Black Basta has built a new tool that helps them break into remote systems like VPNs and firewalls by guessing weak passwords. This tool allows them to easily target companies and demand ransom.

According to cybersecurity experts, the tool— named BRUTED, automatically scans the internet to find systems that might be easy to hack. It focuses on popular VPN and firewall services from companies like Cisco, Fortinet, Palo Alto, and others. It also attacks systems used for remote desktop access.

The tool gathers information like IP addresses, website subdomains, and security certificates to help guess passwords specific to each organization. It then sends fake login requests that look like they’re from a real user or device, making it harder to detect.

Since BRUTED runs automatically, it helps hackers attack many targets quickly. This increases their chances of breaking in and earning money from ransomware attacks.

Experts warn that many companies still rely on simple or repeated passwords, which makes their systems easy to hack. Sometimes, attackers use leaked or default passwords that organizations forget to change.

This poor password management exposes businesses to big risks. In fact, weak passwords might have also caused a leak in Black Basta’s own data when a hacker broke into a Russian bank and exposed the gang’s private chats.

Black Basta is known for targeting important industries like healthcare and manufacturing, where even a small disruption can cause major losses. These industries are more likely to pay ransom to avoid shutdowns.

Security experts are urging businesses to act fast—use strong and unique passwords, change default settings, run regular security checks, and train employees about password safety.

Good password habits can help prevent such attacks and protect important systems from hackers like Black Basta.


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VPN breach
Black Basta Cyber Attacks Cyber Network CyberCrime Cyberhackers CyberThreat Password Ransomware VPN breach

Ransomware Hackers Develop Advanced Tool for VPN Breaches

 


In the Black Basta ransomware group, an automated brute force attack tool referred to as BRUTED has been developed to target and compromise edge networking devices such as firewalls and VPNs, as well as other edge networking devices. By using this sophisticated tool, they can efficiently breach vulnerable internet-facing endpoints, making them able to scale ransomware attacks considerably better than ever before. 

A researcher at EclecticIQ identified the presence of BRUTED when she analyzed internal chat logs related to the ransomware gang, and she found that BRUTED exists. These logs were used to reveal insight into the tool's deployment and revealed that Black Basta has been employing BRUTED to conduct credential-stuffing and brute-force attacks since 2023 against a variety of remote access software programs. This cyber threat has been targeting a wide variety of systems, including SonicWall NetExtender, Palo Alto GlobalProtect, and Citrix NetScaler, highlighting the broad scope of the threat. 

It is Black Basta's intention to improve its operational efficiency by automating brute-force attacks, which in turn allows it to exploit critical infrastructure security vulnerabilities more systematically. As a result of the discovery of BRUTED, organizations relying on internet-connected security solutions are at an even higher risk of cybercrime, as the evolving tactics and sophistication of ransomware groups are becoming more complex. 

The Black Basta ransomware operation has developed an automated brute-force framework known as BRUTED, which has been designed specifically to compromise edge networking devices, such as firewalls and virtual private network access points. As a result of this advanced framework, the group can gain early access to targeted networks, which facilitates large-scale ransomware attacks on vulnerable, internet-connected endpoints, which will lead to a successful attack. 

A recently published study by Arda Büyükkaya, a cyber threat intelligence analyst at EclecticIQ, confirms that the Black Basta ransomware group is using a previously unidentified brute-force framework for stealing data. Known as BRUTED, this framework is specifically crafted to automate the process of compromising enterprise VPNs and firewalls, thus enhancing the group's ability to gain unauthorized access to corporate networks, which is significantly enhanced. 

Multiple reports have emerged throughout 2024 detailing the extensive use of brute-force attacks against these devices and password spray. It is still unclear how these incidents are linked to BRUTED or other threat actor operations, although the issue is still under investigation. This tool has been developed to highlight the increasing sophistication of ransomware tactics and the increasing risk organizations face when relying on internet-connected security infrastructure as part of their security measures. 

A thorough analysis of Büyükkaya's source code has proven that the tool's primary function consists of snooping across the internet and credential stuffing attacks, to attack edge network devices. It has been widely used within corporate environments to implement firewalls and VPN solutions. By its log-naming conventions, BRUTED is referred to as the bruised tool, and researchers at EclecticIQ have concluded that it is used by Black Basta to perform large-scale credential-stuffing attacks. This group gains an initial foothold by exploiting weak or reused credentials, which allows them to move from compromised networks to other compromised ones, and ultimately install ransomware. 

It is also BRUTED's responsibility to assist affiliates, who are responsible for performing initial access operations in ransomware campaigns, as well as to enhance the group's operational efficiency. As the framework automates and scales attacks, it can widen the victim pool and accelerate the monetization process, thus increasing the efficiency of ransomware operations. As a result of this discovery, cybercriminals have become increasingly sophisticated in their tactics, which highlights the need for robust security measures to protect against them. 

Arda Büyükkaya explained that the BRUTED framework will enable Black Basta affiliates to automate and scale their attacks to significantly increase the number of victims they can target, as well as boost their monetization efforts to continue operating ransomware. As a result of the emergence of this brute-forcing tool, edge devices are demonstrating their ongoing vulnerability, especially in light of persistent warnings from private cybersecurity firms and government agencies regarding increased threats targeting VPN services. Even though these advisories have been issued, it remains a lucrative attack vector for cybercriminals to hack passwords for firewalls and virtual private networks (VPNs). 

According to the Qualys team, a blog post a while back highlighted the fact that Black Basta has been using default VPN credentials, brute force techniques involving stolen credentials, and other forms of access to gain initial access to their systems. In this report, the manager of vulnerability research at Qualys Threat Research Unit and a co-author of the report asserted that weak passwords for VPNs and other services that are open to the public continue to pose a significant security risk to organizations. 

Furthermore, Abbasi emphasized that several leaked Black Basta chat logs contained simple or predictable credentials, demonstrating the persistent vulnerabilities that threat actors exploit to infiltrate corporate networks. By implementing the BRUTED framework, threat actors can streamline their ransomware operations, as it enables them to infiltrate multiple networks at the same time with as little effort as possible.

As a result of this automation, cybercriminals have access to greater monetization opportunities, which allows them to scale their attacks more efficiently. The risks posed by such tools must be mitigated by the adoption of strong cybersecurity practices. To protect against these risks, organizations must enforce unique passwords for all edge devices and VPNs. Further, multi-factor authentication (MFA) is an essential component of any security system because it adds another layer of protection that prevents unauthorized access, even when credentials are compromised. To identify potential threats, continuous network monitoring is also crucial. 

Security teams should keep an eye on authentication attempts coming from unfamiliar locations and flag high volumes of failures to log in as an indicator of brute force attacks. Several measures can be implemented to reduce the effectiveness of credential-stuffing techniques, such as rate-limiting measures and account-locking policies. As a result of the growing threat of BRUTED, EclecticIQ has provided a list of IP addresses and domains associated with the framework to the public in response. 

Indicators such as these can be used to update firewall rules so that requests from known malicious infrastructure will be blocked effectively while limiting the tool's reach. BRUTED does not exploit software vulnerabilities to gain access to network edge devices, but maintaining up-to-date security patches remains an important part of cybersecurity. Regularly applying the latest patches ensures that potential vulnerabilities in the network security systems are addressed, thus strengthening the overall resilience of the network security systems.
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Software
Cyber Security LockBit Ransomware Software

New Ransomware 'SuperBlack' Abuses Fortinet Firewall Flaws to Launch Attacks

 


A newly discovered ransomware group known as Mora_001 is carrying out cyberattacks by exploiting security weaknesses found in Fortinet's firewall systems. The group is using a custom ransomware strain named SuperBlack to target organizations and lock their data for ransom.

The attackers are taking advantage of two security loopholes that allow them to bypass login protections on Fortinet devices. These issues, listed as CVE-2024-55591 and CVE-2025-24472, were made public by Fortinet earlier this year. Reports indicate that one of these vulnerabilities had been secretly exploited by attackers even before the company officially disclosed it.

Initially, Fortinet clarified that only one of the two bugs had been misused. However, a recent investigation suggests that the second vulnerability was also being exploited during the same period. Researchers from cybersecurity firm Forescout uncovered this while examining attacks that occurred in January and February 2025.


Step-by-Step Breakdown of the Attack

The cybercriminals begin their attack by finding exposed Fortinet firewall devices that haven’t been updated. They then use these security flaws to gain full control over the system.

Once inside, the attackers grant themselves the highest level of access, commonly known as 'super admin' rights. They either use web-based tools or direct network requests to make these changes.

After securing control, they create new administrator profiles with names like forticloud-tech, fortigate-firewall, or adnimistrator. These fake accounts are set up in a way that even if someone deletes them, automated tasks will recreate them instantly.

The hackers then scan the network to understand its layout and start moving from one system to another. They use stolen login details, create new VPN accounts, and rely on common tools like WMIC and SSH to spread across connected machines. They also try to break into systems that use security checks like TACACS+ or RADIUS.

Before locking files, the group copies important data using their own tools. Their main targets include file storage systems, database servers, and computers that control user access across networks. Once the data is stolen, the ransomware is triggered, encrypting files and leaving ransom messages behind.

To make it harder for experts to investigate the attack later, the hackers run a program called ‘WipeBlack’. This tool removes all traces of the ransomware from the system, leaving very little evidence.


Possible Links to a Bigger Ransomware Group

During their investigation, Forescout found that SuperBlack ransomware shares several similarities with the well-known LockBit ransomware group. The coding style and methods used appear to have been copied from LockBit’s earlier leaked tools.

However, it looks like SuperBlack is being operated separately and is not officially part of the LockBit group.

This incident is a reminder of the risks that come with outdated software. Organizations using Fortinet firewalls should install security updates immediately to avoid falling victim to such attacks. Staying updated is crucial in protecting sensitive information from advanced ransomware threats.



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Stolen Data
Cyberattack Cybersecurity Data Breach health data medical records Personal Information Ransomware Social Security Stolen Data

Sunflower and CCA Suffer Data Breaches, Exposing Hundreds of Thousands of Records

 

Sunflower recently disclosed a cyberattack on its systems, revealing that hackers gained access on December 15 but remained undetected until January 7. 

During this time, sensitive personal and medical data — including names, addresses, dates of birth, Social Security numbers, driver’s license details, medical records, and health insurance information—were compromised. According to its filing with the Maine Attorney General’s Office, the breach impacted 220,968 individuals.

Meanwhile, CCA experienced a similar data breach in July last year. The organization reported that cybercriminals stole extensive patient information, including names, addresses, dates of birth, driver's license numbers, Social Security numbers, diagnoses, lab results, prescriptions, patient ID numbers, and provider details. The breach affected 114,945 individuals, as per its filing with Maine’s Attorney General’s Office.

The Rhysida ransomware group has claimed possession of 7.6TB of Sunflower’s data, including a 3TB SQL database, according to The Register. With the data still listed online, it suggests that either negotiations are ongoing or have collapsed. However, as of now, there is no confirmed evidence of the stolen data being misused on the dark web.

Following these incidents, both organizations have taken steps to strengthen cybersecurity measures to prevent future breaches.
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third-party risk
business disruption Cyber Attacks Cyber Insurance Cybersecurity Data Breach Ransomware third-party risk

Cyberattacks on Key Vendors Trigger Widespread Disruptions Across Industries

Cybercriminals are increasingly targeting a single point of failure within companies to create large-scale disruption, according to a recent report by Resilience. The analysis highlights how such attacks can have a ripple effect across entire industries.

In 2024, the global average cost of a data breach was estimated at nearly $4.9 million, based on IBM research. However, certain incidents proved to be significantly more damaging.

One of the most costly breaches occurred when UnitedHealth reported a staggering $3.1 billion expenditure in response to a cyberattack on its Change Healthcare subsidiary. This division processes billions of medical claims annually, and the ransomware attack led to prolonged disruptions in the healthcare sector.

“It was the most significant and consequential cyberattack in the history of U.S. health care,” said John Riggi, national advisor for cybersecurity and risk at the American Hospital Association, in a blog post.

Another major incident targeted CDK Global, a software provider for car dealerships across the U.S. The ransomware attack caused financial damages exceeding $1 billion collectively, as estimated by Anderson Economic Group.

The cyberattacks on Change Healthcare and CDK Global exemplify how disruptions in interconnected organizations can have widespread industry consequences, Resilience noted in its report.

According to Resilience’s analysis, third-party risks have become a leading factor in cyber insurance claims, representing 31% of claims filed by its clients in 2024. While a slightly higher percentage (37%) of third-party claims was recorded in 2023, none resulted in material financial losses.

The study also revealed that ransomware attacks targeting vendors have become a “new and significant” contributor to insurance claims, accounting for 18% of such cases.

Although ransomware remained the primary cause of cyber losses in 2024—responsible for 62% of claims—its overall occurrence may be declining. Resilience attributes this trend to cybercriminals shifting focus toward larger, high-profile organizations that offer bigger financial payouts, moving away from the traditional “spray and prey” strategy.
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