Aerial of Foster City, Calif., with neighborhoods, a lake, San Francisco Bay and the Diablo Range in the background. Foster City is part of the San Francisco Bay Area along the San Francisco Peninsula.

A Bay Area city remains largely shut down more than a week after a cyberattack. Foster City, with a population of 33,000, has been without working phones or emails for over a week.

“On March 19, 2026, the City’s network was attacked by an external actor in the form of a ransomware attack, and this attack caused network access to become........

© SFGate