Apple users are being urged to exercise caution when following troubleshooting instructions found online after cybersecurity experts underlined a growing social engineering tactic that tricks victims into pasting malicious commands into the macOS Terminal application. Rather than exploiting a flaw in macOS itself, the scam relies on convincing users to voluntarily execute commands that can install malware, grant attackers remote access, or expose sensitive information stored on their devices.
Often referred to as a "copy-paste" scam, the technique targets users unfamiliar with Terminal, a command-line interface included with macOS that enables direct interaction with the operating system through text-based commands. While the application is commonly used by developers, system administrators and advanced users to automate tasks or manage system settings, executing unfamiliar commands without understanding their function can introduce significant security risks.
Unlike traditional malware campaigns that exploit software vulnerabilities, this attack depends almost entirely on social engineering. Cybercriminals impersonate trusted sources or create convincing troubleshooting scenarios to persuade victims that running a Terminal command is necessary to fix a technical issue, improve security or restore system performance. Once executed, however, the command may download malicious software, establish remote access, alter security settings or perform other unauthorized actions without the user's awareness.
Depending on the instructions provided, attackers could gain access to documents, photographs, emails, browser data, financial information, saved credentials and contact lists stored on the Mac. Some malicious scripts may also deploy keylogging software capable of recording everything a victim types, including usernames, passwords and other confidential information. In more severe cases, attackers could install ransomware or persistence mechanisms that allow them to retain access to the compromised system even after a restart.
Security researchers note that the scam can begin through multiple channels. Victims may receive phishing emails or text messages containing the malicious command, encounter it in online discussion forums disguised as a legitimate solution, or visit fraudulent websites presenting it as an official troubleshooting step. Attackers have also been observed posing as technical support representatives over the phone, carefully instructing victims to open Terminal and manually type commands under the pretense of resolving an issue.
The rise of generative artificial intelligence has introduced another avenue for abuse. Threat actors may intentionally publish malicious commands across public websites and discussion platforms in an effort to influence AI-powered assistants through a technique known as indirect prompt injection. If an AI system retrieves or references poisoned content while responding to a user's troubleshooting request, it could inadvertently recommend unsafe commands. Although AI tools continue to improve their safeguards, cybersecurity experts advise users to independently verify any command before executing it on their systems.
The attack typically follows a similar pattern. After directing a user to open the Terminal application located within the Utilities folder inside Applications, the attacker provides one or more commands and claims they are required to diagnose, repair or secure the computer. In reality, those commands may download remote administration tools, retrieve additional payloads from external servers, modify system configurations or provide unauthorized access to the attacker's infrastructure.
Because the attack depends on user participation rather than exploiting a software flaw, many victims may not immediately recognize they are being targeted. Individuals unfamiliar with Terminal often have little reason to question commands presented by someone claiming to represent Apple, a software vendor or a technical support service. Similarly, users searching online for solutions may encounter malicious instructions embedded within forum posts or copied across multiple websites, making them appear credible.
To help reduce the effectiveness of these attacks, Apple introduced additional safeguards in recent versions of macOS. When users who do not regularly work in Terminal attempt to paste commands copied from websites, messaging platforms, email applications or chatbots, the operating system may interrupt the action with a warning indicating that the pasted content could contain malware or compromise privacy. Rather than automatically executing the command, the prompt encourages users to reconsider before proceeding.
Apple has also expanded malware detection capabilities within Terminal. If the operating system identifies known malicious content or scripts, it can block execution and notify the user that the pasted command has been prevented because it poses a security risk. These protections are designed to slow down impulsive actions and reduce the likelihood of users unknowingly compromising their own systems.
Cybersecurity professionals emphasize that no security warning should replace careful judgment. Users should never execute Terminal commands they do not fully understand, regardless of whether the instructions originate from an email, text message, online forum, chatbot or unsolicited phone call. Requests accompanied by pressure tactics or claims that immediate action is required should be treated with particular suspicion, as creating a false sense of urgency remains one of the most common techniques used in phishing campaigns.
Experts also caution against assuming that information found on public forums or generated by AI assistants is inherently trustworthy. Malicious instructions can spread rapidly across the internet and may be reproduced by multiple sources, giving them an appearance of legitimacy. Verifying guidance through official Apple documentation or other trusted security resources before executing any command remains one of the most effective ways to avoid becoming a victim of Terminal-based social engineering attacks.
