All 3 billion of the user accounts it had in 2013 have been affected by the security breach, the company, now owned by Verizon, said on Tuesday. Formerly, the company estimated the hack affected one billion yahoo accounts.
That’s 3 billion Yahoo accounts, such as e-mail, Tumblr, fantasy, and Flickr — or 3 times as many as the company initially reported in 2016.
Names, e-mail addresses, and passwords, however not economic information were breached, Yahoo said last 12 months.
The new disclosure comes 4 months after Verizon obtained Yahoo’s core internet assets for $4.48 billion. Yahoo is part of Verizon’s digital media company, that is known as Oath.
Verizon revised the number of breached accounts to 3 billion after receiving new data.
“The organization currently acquired new intelligence and now believes, following an investigation with the help of outside forensic professionals, that all Yahoo user accounts had been affected by the August 2013 theft,” Verizon said in an announcement.
Verizon would not offer any information about who the outside forensics specialists are.
Yahoo will send emails to the additional affected yahoo accounts. Following the hacking revelations last year, Yahoo required password changes and invalidated unencrypted security questions to protect user data.
According to specialists, it is not unusual for forensic investigations to expose a greater number of victims than initial estimates.