City of Hayward data breach

What we know

The City of Hayward is a municipal government entity responsible for providing essential public services to its residents and managing city operations. As a government body, the City typically collects and stores sensitive personal information including Social Security numbers, driver’s license numbers, tax records, and utility account details necessary for administrative and public safety functions. This data breach was officially reported to the California Attorney General in 2025, and the City has since issued formal notification letters to all individuals whose personal information may have been impacted. If you received such a letter, it indicates that your sensitive records were involved in this security incident, and you should review the provided documentation carefully to understand the specific risks to your personal data.

See every breach reported in California or read what to do after a ransomware attack.