Independent public-records tracker. Not a government website.Facts from official state, HHS and SEC filings
BreachRecord

Data breaches reported to the California Attorney General in 2016

Data breach notices filed with the California Attorney General in 2016: 3 breaches. Each breach page shows the official filing and any other agencies the breach was reported to.

Updated Oct 21, 2026 · Showing 1–3 of 3

Organization Filed in California People affected Information exposed Filed with
Yahoo Inc.Yahoo Inc. breach history At least 2,448,000
  • Date of birth
  • Username and password
  • Name
  • +3 more
 Maine AG, California AG
Banner HealthBanner Health breach history 3,620,000
  • Social Security number
  • Medical information
  • Date of birth
  • +2 more
 Washington AG, Maine AG, HHS, California AG
21st Century Oncology21st Century Oncology breach history 2,213,597
  • Social Security number
  • Medical information
  • Health insurance information
  • +1 more
 Washington AG, Maine AG, HHS, California AG

Other years

People affected is the official total from a filing, or “At least” the sum of state filings where no total was filed. Spotted an error? Report a correction.