Yahoo Revises Massive Data Breach Impact from 1B to 3B Users

From eWeek: On Oct. 3, Yahoo now part of Verizon's Oath business unit, publicly disclosed that all of its users were impacted by a data breach in August 2013. Oath estimates that information on three billion users was stolen by attackers in the breach.

The three billion figure for the data beach is a dramatic increase from the initial figures provided by Yahoo when the breach was first revealed. In December 2016, Yahoo publicly reported that the breach occurred in August 2013 impacting one billion users.

"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," the company stated.

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