KMS Solutions Data Breach Exposes PII including SSNs, Names, and Financial Info

KMS Solutions, LLC, a defense and systems engineering contractor, recently experienced a data breach that may affect individuals across several states.

According to disclosures filed with state regulators, the company detected suspicious activity within its systems and determined that unauthorized access or acquisition of sensitive information occurred between Nov. 27, 2025, and Dec. 7, 2025. The breach was discovered on Dec. 31, 2025, after a thorough investigation involving third-party cybersecurity specialists.

The types of information exposed in this incident include first and last name, Social Security number and financial account information.

The company notified affected individuals in writing beginning Jan. 16, 2026, and provided official notice to state regulators, including the Maine Attorney General, Massachusetts Office of Consumer Affairs and Business Regulation, Vermont Attorney General, and New Hampshire Attorney General.

As of the latest filings, 66 Massachusetts residents, 61 New Hampshire residents, and 19 Maine residents, were identified as affected. The total number of individuals affected across the United States has not been publicly disclosed.

KMS Solutions's response

Upon discovering the breach, KMS Solutions took steps to secure its systems and launched a comprehensive investigation with the help of third-party cybersecurity experts. The company has implemented additional technical safeguards to further protect the information it holds and to prevent similar incidents in the future.

For those affected, KMS Solutions is offering complimentary credit monitoring and identity protection services through Experian IdentityWorks.

This service includes access to credit reports, active credit monitoring, identity restoration specialists, and up to $1 million in identity theft insurance. Affected individuals are encouraged to enroll in these services by following the instructions provided in their notification letter.

In addition to enrolling in credit monitoring, individuals should remain vigilant by reviewing credit reports and account statements for suspicious activity. The company has provided guidance on how to place fraud alerts or credit freezes with the major credit bureaus and recommends reporting any suspicious activity to financial institutions and appropriate authorities.