MKS Instruments, Inc

MKS Instruments, Inc. reported a ransomware event in Maine affecting 8 residents. Discovered on February 13, 2023, the incident involved encryption of business/manufacturing systems and potential exfiltration of personal data, including Social Security Numbers. MKSI activated incident response protocols, engaged outside experts, notified law enforcement, and provided 2 years of Equifax identity monitoring services.

MKS Instruments Inc reported a data breach to the Indiana Attorney General. The breach occurred on 2023-02-03 and was reported on 2023-02-16. 7 Indiana residents were affected.

MKS Instruments, Inc. notified Montana residents of a ransomware event discovered on Feb 13, 2023. The incident involved encryption of business/manufacturing systems and potential exfiltration of personal data including names, SSNs, login credentials, and financial info. The company engaged forensic experts, notified law enforcement, and is offering 2 years of free identity monitoring.

MKS Instruments, Inc. notified the NH AG of a ransomware event detected on Feb 13, 2023, affecting systems since Feb 3, 2023. The incident involved encryption of business/manufacturing systems and potential exfiltration of employee personal data (PII, SSN, credentials, financial info). 203 NH residents were notified on Feb 16, 2023. MKSI engaged forensic experts, reset passwords, deployed MFA, and installed Sentinel One. Identity monitoring offered for 2 years.

MKS Instruments, Inc. disclosed a ransomware incident discovered on February 13, 2023. The attack encrypted business and manufacturing systems. While exfiltration of personal employee data has not been confirmed, it cannot be ruled out. Potentially affected data includes names, contact info, SSNs, login credentials, bank account info, and health/employment data. The company activated incident response, engaged outside experts, notified law enforcement, and is offering 2 years of identity monitoring.

MKS Instruments, Inc. reported a data breach to the Massachusetts Office of Consumer Affairs and Business Regulation. The breach was reported on 2023-02-15. 1,045 Massachusetts residents were affected. The report records the breach type as electronic.

MKS Instruments, Inc. filed a supplemental 8-K regarding a previously disclosed ransomware event. The incident materially impacted the Vacuum Solutions and Photonics Solutions Divisions' ability to process orders and ship products. The Materials Solutions Division was not impacted. The company is in the recovery phase, working to restore operations. The full scope of costs and impacts, including insurance offsets, has not been determined. No specific data types or individual counts were disclosed in this filing.

MKS Instruments, Inc. disclosed in an 8-K filed February 6, 2023 that on February 3, 2023 it identified a ransomware event. The company activated its incident response and business continuity protocols, engaged incident response professionals, and notified law enforcement. Operations at certain facilities were temporarily suspended. Investigation is ongoing; data types and affected individual counts were not disclosed.

ESI, a subsidiary of MKS Instruments, notified NH AG of a phishing incident affecting one NH resident. Unauthorized access to an employee email account occurred between April 9-20, 2019. Data exposed included SSN, stock info, and employee ID. ESI secured accounts, engaged forensics, notified FBI, and offered credit monitoring.