Industry — Data Breach
Executive Summary
Foster City goes offline after cybersecurity breach: The Daily Journal reports: Days after a cybersecurity breach that was “widely impacting city services,” the city of Foster City has moved its network offline, an action that disrupted its phone and email systems outside of emergency response, according to the city. City staff...
What Happened
Foster City experienced a cybersecurity breach that widely impacted city services, prompting officials to take the entire city network offline. The network shutdown disrupted phone and email systems for city staff, though emergency response systems remain operational. The breach occurred in late March 2026, and the city took the offline action days after the initial incident.
Who Is Affected
City staff in Foster City are directly affected, losing the ability to make or receive calls and respond to emails through city systems. Residents seeking to contact city departments through normal communication channels are also impacted by the service disruption. The extent to which resident data may have been compromised during the breach is not specified in available sources.
Why It Matters
Municipal cybersecurity breaches expose vulnerabilities in local government infrastructure that handles sensitive citizen data including tax records, utility accounts, and personal information. The decision to take an entire city network offline demonstrates the severity of the threat and highlights how cyberattacks can cripple essential public services beyond just data exposure. This incident illustrates the growing risk municipalities face as targets for cybercriminals.
What You Should Do
Foster City residents should avoid sending sensitive personal information to city departments via email or phone until normal services are restored. Monitor official city communications through their website or social media for updates about service restoration and any potential data compromise notifications. If you have recent transactions with city departments, monitor your financial accounts for unusual activity and consider placing fraud alerts with credit bureaus as a precautionary measure.
AI-Assisted
Event summaries are generated by Claude AI from verified sources and reviewed by humans before publication.