Foster City, California declared a state of emergency following a cyberattack that disrupted municipal IT systems and public-facing city services; the attack type, threat actor, and data exposure scope remain unconfirmed in public sources as of this report. Behavioral indicators are consistent with ransomware-pattern activity (T1486, T1489, T1490) though ransomware has not been officially confirmed. Municipal and government-sector organizations with shared infrastructure or inter-agency data dependencies on Foster City should assess their exposure and use this incident as a tabletop trigger for ransomware resilience and emergency declaration procedures.