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The City of San Jose, California data breach

Incident readout

Company
The City of San Jose, California
Reported to
California Attorney General
Filed
February 9, 2026
People affected
Not stated in the filing
Incident type in filing
Not stated
Our review
Investigation Open

Was this a ransomware attack?

The filing does not say ransomware was involved. We do not label an incident ransomware unless the company’s report says so. Whatever the cause, the steps to protect yourself and the legal question are the same.

What we know

The City of San Jose, California is a municipal government entity responsible for providing essential public services to its residents. As a local government agency, the City collects and maintains sensitive personal information necessary for tax administration, utility billing, public safety, and human resources management. This data breach was officially reported to the California Attorney General in 2026, and the City has since issued formal notification letters to all individuals whose personal information may have been impacted. If you have received such a letter, it indicates that your sensitive data was stored within the affected systems at the time of the incident. We encourage you to review the provided documentation carefully to understand the specific scope of the exposure and the protective measures being offered.

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

Other breaches reported in California

Attorney advertising. This page reflects a public regulator filing; it does not mean a lawsuit has been filed or that the company did anything unlawful. Submitting a review request does not create an attorney-client relationship.