Anne Arundel County Confirms Unauthorized Access to Government Systems in Two Cybersecurity Incidents, Announces Plans to Notify Affected Individuals
Anne Arundel County officials have released new information concerning two cybersecurity incidents involving unauthorized access to government computer systems in 2025 and 2026, confirming that certain files were accessed or copied and that notification letters will soon be sent to individuals potentially affected by the earlier incident. In an October 15, 2026, announcement, county officials provided updates on both incidents, outlining the findings of cybersecurity investigations, efforts to identify potentially compromised information and measures being taken to notify affected individuals. Related: Anne Arundel County CyberSecurity Incidents The first incident was discovered on February 22, 2025, when county officials identified suspicious activity involving portions of the county's computer network. An investigation conducted with assistance from cybersecurity specialists, law enforcement and state agencies subsequently determined that an unauthorized party had ac...