FILE PHOTO - A Yahoo logo is pictured in front of a building in Rolle, Switzerland on December 12, 2012. REUTERS/Denis Balibouse/File Photo

Yahoo says every single account was affected by 2013 attack — 3 billion in all

Originally, the company said 1 billion out of 3 billion accounts were affected

Topic |   CNBC

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FILE PHOTO - A Yahoo logo is pictured in front of a building in Rolle, Switzerland on December 12, 2012. REUTERS/Denis Balibouse/File Photo
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