MathWorks, a leading developer of mathematical simulation and computing software, revealed that a ransomware gang stole the data of over 10,000 people after breaching its network in April.
The company disclosed the attack on May 27, when it linked ongoing service outages to a ransomware incident that disrupted access to some internal systems and online applications for its staff and customers.
Impacted services included multi-factor authentication (MFA), account SSO (Single Sign-On), the MathWorks cloud center, file exchange, license center, and the online store.
In a recent filing with Maine’s Attorney General, the company said that it discovered the incident on May 18, more than one month after the attackers gained access to its systems. According to the same filing, the attackers stole the data of 10,476 individuals.
MathWorks also revealed in data breach notification letters filed with the Massachusetts Attorney General’s Office that the ransomware gang behind the April cyberattack stole documents containing personal information of affected individuals.
Depending on the impacted individual, this stolen information includes a combination of names, addresses, dates of birth, Social Security Numbers, and/or other non-U.S. national identification numbers.
Although it has already confirmed that it was the victim of a ransomware attack, MathWorks has yet to reveal additional details regarding this incident, including the name of the ransomware operation behind the breach.
Additionally, no ransomware gang has claimed responsibility for the breach, which suggests that MathWorks is still in negotiations or has already paid the ransom demanded by the attackers.
Founded in 1984 and Headquartered in Natick, Massachusetts, MathWorks has over 6,500 employees in 34 offices worldwide. MathWorks develops the MATLAB numeric computing platform and Simulink simulation, used by over 100,000 organizations and more than 5 million customers worldwide.
A MathWorks spokesperson has yet to reply to a request for comment when contacted by BleepingComputer.
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