Middlesex Sheriff’s Office Announces Results Of Security Breach Investigation

Below is a press release from the Middlesex Sheriff’s Office:

BILLERICA, MA — The Middlesex Sheriff’s Office (MSO) is providing official public notice of the results of an investigation into a breach of security that occurred in January 2025.

Over the past year, the MSO has worked closely with state and federal law enforcement partners including the Federal Bureau of Investigation, the Massachusetts State Police, the Commonwealth Fusion Center and the Massachusetts Executive Office of Technology Services and Security, and two (2) leading private cybersecurity vendors to determine the extent of this event.

This comprehensive investigation and review has determined that the breach involved unauthorized access to protected health information of individuals the MSO may have previously provided medical care to. The protected health information involved varied by individual and may have included the affected individual’s name, address, date of birth, diagnoses and/or other general health information.  The MSO is not aware of any unauthorized use of protected health information and has since secured the affected systems, implementing additional security measures to safeguard protected health information.

As a result of this determination, the Middlesex Sheriff’s Office strongly encourages individuals whose information may have been accessed to monitor their credit reports, consider a fraud alert, and review their personal information such as bank statements and insurance records for any signs of fraud to protect themselves from potential harm.

The Middlesex Sheriff’s Office has posted information regarding this incident, including steps individuals may take to request a free security freeze on their credit reports on its website at www.middlesexsheriff.org.

Members of the public who are concerned about whether their information may have been accessed may contact the MSO at cyberinquiry@sdm.state.ma.us.