MathWorks Inc. Data Breach Lawsuit Investigation
Was your personal data locked behind ransomware — then stolen — in the MathWorks Inc. breach? Thousands of employees just found out it was. Find out how to protect yourself and learn whether you can file a claim.
Quick Facts
- Company: MathWorks Inc.
- Breach window: April 17 – May 18, 2025
- Discovery date: May 18, 2025
- Notice mailed: August 22, 2025
- Data exposed: Social Security numbers, financial data, medical information & more (full list below)
- Free credit monitoring: 24-month IDX plan — enroll by November 22, 2025
What Happened?
MathWorks — the maker of MATLAB and Simulink — detected a ransomware attack on May 18, 2025. Investigators determined hackers had been inside certain internal networks since at least April 17. During that month-long window, servers were encrypted, customer-facing services were disrupted, and sensitive files were copied by the attackers.
What Information Was Stolen?
According to disclosures filed with the Massachusetts and New Hampshire Attorneys General, the threat actors accessed both personally identifiable information (PII) and protected health information (PHI), including:
- Full names and addresses
- Dates of birth
- Social Security numbers
- National ID or passport numbers
- Driver’s license & birth-certificate numbers
- Financial account and routing details
- Medical and health-insurance information
Who Is Impacted?
The breach primarily affects current and former MathWorks employees worldwide. At least 8,324 Massachusetts residents and 87 New Hampshire residents were notified, with thousands more expected nationwide.
Company Response
MathWorks activated its incident-response plan, notified federal law enforcement, and offered a complimentary 24-month IDX identity-protection package featuring:
- Credit monitoring & CyberScan dark-web surveillance
- Up to $1 million in identity-theft insurance
- Fully managed identity-recovery services
The enrollment deadline is November 22, 2025.
Download Official Breach Notice (PDF)Your Legal Options
If your data was exposed, you may be entitled to:
- Reimbursement for out-of-pocket expenses (credit-monitoring fees, bank charges, etc.)
- Compensation for time spent dealing with identity-theft risks
- Damages for emotional distress
Class-action investigations are underway. Preserve all letters and emails from MathWorks and document any fraudulent activity to strengthen a potential claim.
How to Protect Yourself Now
- Enroll in the free IDX credit-monitoring service.
- Review bank, credit-card and health-insurance statements for unfamiliar charges.
- Place a free fraud alert or credit freeze with each major bureau.
- Watch for phishing emails or calls impersonating MathWorks or IDX.
- Consider additional identity-theft coverage if you store or transmit sensitive data.
Frequently Asked Questions
What happened in the MathWorks Inc. data breach?
Hackers installed ransomware on MathWorks servers between April 17 and May 18, 2025, encrypted files and exfiltrated sensitive employee data.
What data was exposed in the MathWorks Inc. ransomware attack?
Names, addresses, dates of birth, Social Security numbers, passport or driver’s-license IDs, financial and medical information.
How do I know if I am affected by the MathWorks Inc. breach?
You should receive a mailed notice if your information was involved. Contact MathWorks HR or IDX if you believe you were missed.
Can I sue MathWorks Inc. for the data breach?
Possible. Class-action investigations are evaluating compensation for identity-theft risks, out-of-pocket costs and emotional distress.
What is the deadline to enroll in free credit monitoring from MathWorks Inc.?
The IDX enrollment deadline is November 22, 2025. Sign up sooner to maximize monitoring coverage.
How do I protect my identity after the MathWorks Inc. data breach?
Use the free credit monitoring, place fraud alerts, review statements regularly, and beware of phishing attempts using your leaked data.
Staying vigilant is the best defense. Act now to reduce the risk of identity theft and preserve your legal rights.