The City of Marina, California, experienced unauthorized access to its computer network between August 19 and August 20, 2025. An unauthorized person gained access to systems and acquired copies of files containing personal information, including names and other data elements. The City identified the activity on August 20, 2025, and engaged forensic investigators. On December 29, 2025, the City confirmed that specific individuals' data was involved and sent notifications. The City is offering one year of complimentary identity monitoring services through Experian IdentityWorks.