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KLA Instruments Data Breach Lawsuit Investigation
Shamis & Gentile P.A., one of the nation's premier class action law firms specializing in data breach cases, is investigating the KLA Corporation dba KLA Instruments - Filmetrics data breach.
If you were affected by the data breach, your sensitive personally identifiable information may have been exposed, and you may be eligible for compensation.
About KLA Corporation dba KLA Instruments
KLA Corporation, doing business as KLA Instruments – Filmetrics, is a major provider of metrology and inspection systems for the semiconductor and high-tech manufacturing industries. Founded in 1976 and headquartered in Milpitas, California, the company acquired Filmetrics in 2019.
KLA Instruments specializes in surface measurements and thin-film characterization, offering tools such as stylus profilometers, nanoindenters, thin-film reflectometers, and defect inspection systems. Their products are widely used in semiconductor fabrication, materials science, and electronics manufacturing. The Filmetrics brand, now part of KLA Instruments, is known for accessible and cost-effective thin-film measurement systems.
What happened?
On or around Aug. 5, 2025, KLA Instruments discovered that an unauthorized actor gained access to certain corporate internal systems. The company engaged third-party forensic and data mining experts to investigate and determined that files containing sensitive data were accessed and obtained in the data breach.
KLA Instruments sent notices to affected consumers on Nov. 7, 2025. The total number of affected current and former employees and other individuals has not been released.
Possible exposed information
- First and last name
- Contact information
- Date of birth
- Social Security information
- Driver's license number
- Financial account information
KLA Instruments stated there is no evidence of identity theft or fraud involving the affected data at this time. However, they are offering two years of free credit monitoring and identity protection services through IDX.
Your Rights and Next Steps
If you received a notice about this data breach, you have important rights and options to help protect yourself. You may be entitled to seek compensation for any harm or inconvenience caused by this cybersecurity incident.
Here’s what you can do:
- Identity theft protection services: Enroll in the two years of free IDX identity theft protection and credit monitoring services by the deadline of Feb. 7, 2026.
- Monitor your accounts carefully: Check your financial statements regularly for suspicious activity or unauthorized transactions. If you notice anything unusual, contact your financial institution immediately.
- Fraud alert and credit reports: A fraud alert informs creditors to take extra steps to verify your identity before opening new accounts in your name. Consumers are also entitled to one free credit report annually from each credit bureau. You can request a fraud alert or a credit report by contacting any one of the three major credit bureaus.
- Seek legal help: Lawyers are ready to help you understand your rights and pursue compensation.
You May Be Entitled to Compensation
If your information was compromised in the KLA Instruments data breach, you may be eligible for compensation. This could include reimbursement for out-of-pocket expenses, time spent addressing the breach, or payment for emotional distress.
To find out if you qualify and to join a potential lawsuit, complete the form below.
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