Official register

Data breaches reported to the California Attorney General

Companies that notify California residents of a breach file a copy of their notice letter with the Attorney General, who publishes it. The tracker has read 2,359 of its notices since 1 January 2023. Each links to the company’s page, with everything else known about the breach. The register itself.

Last 30 days

47

2026 so far

478

On the tracker

2,359

Breach to notice, median

158 days

Time from the start of a breach to the notice: the median over the 2,253 notices that give both dates.

From the data breach tracker: official notices, breach databases and the news, every fact with its source. Open data (CC BY 4.0) · How the tracker works · Official registers · Corrections and changes · Found a mistake? Tell us and we correct it.