All 3 Billion Yahoo Accounts Affected in Catastrophic Breach

The Yahoo rift was already considered to be the large sleep with hack of user data when it was counted at1 billion affected account . Now , that record - breaking rupture has tripled in sizing .

All Yahoo accounts were touch on by a catastrophic falling out in 2013,the company confirm today . Yahoo had antecedently station the total at over one billion and has now updated it to a stunning three billion bill .

The break , which was assign to nation - state of matter hacker , occurred in 2013 but was n’t discovered until 2016 . Verizon closed its accomplishment of Yahoo this year , after demanding a discount based on the security failure , and merge it with AOL to make a fresh companionship , Oath .

Argentina’s President Javier Milei (left) and Robert F. Kennedy Jr., holding a chainsaw in a photo posted to Kennedy’s X account on May 27. 2025.

“ Subsequent to Yahoo ’s acquisition by Verizon , and during integration , the company lately obtained newfangled intelligence information and now believe , following an investigating with the assistance of away forensic experts , that all Yahoo user account were affect by the August 2013 theft , ” Yahoo say ina disclosure filed with the SEC . “ The investigating argue that the user account information that was steal did not include countersign in clear text , payment card data , or bank account information . ”

Yahoo suffer multiple intrusions into its connection , lose electronic mail addresses , weakly - hashed passwords , and other personal information . aggressor accessed Yahoo ’s interior codification , enable them to forge cookies to get at sealed butt ’ email business relationship and to put fraudulent links in Yahoo search results .

Yahoo required the previous 1 billion user thought to be affected to change their countersign and security measures question . These changes will also be ask of the the 2 billion citizenry now love to be included in the breach .

William Duplessie