Cyber Incident Victim: Monterey Peninsula Unified School District

Monterey Peninsula Unified School District discovered a data security incident involving potential unauthorized network access on or approximately November 1, 2021. The district initiated an investigation but did not publicly disclose the specific method through which it became aware of the network compromise. By December 10, 2021, forensic analysis confirmed that certain files containing employee personal information resided within network locations potentially accessed during the incident. Affected data categories included first and last names, Social Security numbers, medical information, and financial account details. The district found no evidence of actual misuse of this information as of December 21, 2021, the date it issued formal notification letters.

The district formally notified current and former employees whose data was involved, submitting a copy of this notification to the California Attorney General’s Office as required by state law. Communications did not specify the total number of impacted individuals nor indicate any compromise of student information. In response to the breach, Monterey Peninsula Unified School District offered affected persons twelve months of complimentary credit monitoring and identity protection services through Cyberscout. The organization continued investigating the incident’s scope and origins beyond the December notification date, though no additional findings were reported in the initial public disclosure. No technical details regarding attack vectors, threat actor attribution, or specific compromised systems were released.