Yahoo Inc. Data Breaches: History and Settlements

Last updated Oct 20, 2026 · 1 data breach in official filings

1 data breach involving Yahoo Inc. appears in official filings with US state attorneys general, the U.S. Department of Health and Human Services or the SEC. Each breach page lists the information involved, the agencies it was filed with and links to every official source.

Data breaches

Yahoo Inc. (December 2016) First filed Dec 14, 2016 · Filed with Maine AG, California AG
At least 2,448,000 people
- Date of birth
- Username and password
- Name
- +3 more

Sources

The facts for each breach come from the official filings listed in the Sources section of its page.

Names used in filings: Yahoo Inc.; Yahoo; Yahoo! Inc.; Yahoo, Inc..

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