Foster City, California, has taken most of its computer systems offline following a cybersecurity breach that occurred on Thursday. IT staff identified ransomware on city networks, leading to the suspension of all public services except for emergency services. The city is now in the process of declaring a state of emergency, which allows the city to receive financial support from outside agencies. The breach may have accessed public information and has been urged by anyone involved in the city's business to change their passwords and protect their personal data. City Hall remains open to the public with limited services, but all emergency services are operational.