Stuart Breckenridge

Yahoo Confirms 2013 Data Breach Affected All Accounts

It turns out Yahoo’s 2013 data breach affected all accounts in existence at the time of the breach:

Subsequent to Yahoo’s acquisition by Verizon, and during integration, the company recently obtained new intelligence and now believes, following an investigation with the assistance of outside forensic experts, that all Yahoo user accounts were affected by the August 2013 theft.

This seemed to be inevitable.

Previously: Yahoo’s 2013 Data Breach Expanded to 2015 and 2016, Yahoo Confirms Security Breach of 1 Billion Accounts


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