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
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