MathWorks, the company behind MATLAB and Simulink, has confirmed a ransomware attack that disrupted several of its online services and internal systems. The company said the disruption affected services customers use to sign in and manage software, and that it alerted federal law enforcement while investigating the incident.
According to state notifications filed with regulators, the attack resulted in the unauthorized access and theft of personal information for 10,476 people. These filings list the full count reported to state authorities.
What was taken and who is affected
The company’s notices explain that the records exposed vary by person, but may include names, postal addresses, dates of birth, Social Security numbers, and in some cases non-U.S. national ID numbers. In short, the stolen files could contain information that makes victims vulnerable to identity theft.
MathWorks’ own statements and regulatory notices put the window of unauthorized access between April 17 and May 18, 2025. The company discovered the breach on May 18 and publicly linked the outage of several services to a ransomware incident in late May. MathWorks says forensic teams contained the threat and that investigators found no ongoing activity after May 18.
What is not yet known
MathWorks has not identified any named ransomware group in public statements, and so far there is no verified public evidence that the stolen data has been published or sold. The company continues to monitor the situation and has offered identity protection services for those notified.
What you can do
If you use MathWorks products, check your account notices and follow any enrollment instructions for identity protection. Monitor financial and credit accounts, set up fraud alerts if you see suspicious activity, and change passwords for affected services. If you receive unusual messages or requests for money or personal data, treat them with suspicion and report them to your bank or local authorities.
• Keep an eye on financial activity: Regularly review your bank and credit card statements to spot unauthorized transactions quickly.
• Consider credit monitoring or freezes: In countries where these services are available, they can help detect or prevent new accounts being opened in your name.
• Reset passwords immediately: Update the password for your MathWorks account and avoid using the same password across multiple platforms. A password manager can help create and store strong, unique passwords.
• Enable multi-factor authentication: Adding a second layer of verification makes it much harder for attackers to gain access, even if they have your login details.
• Stay alert for phishing attempts: Be cautious of unexpected emails, calls, or texts asking for sensitive information. Attackers may use stolen personal details to make their messages appear more convincing.
