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

Data breaches in December 2016

Data breaches first reported to a state attorney general, HHS or the SEC in December 2016: 1 breach. Facts come from official filings with US state attorneys general, the U.S. Department of Health and Human Services (HHS) and the SEC; each breach page links its sources.

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

Organization First filed 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

Other months in 2016

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.