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DATE : 2017 NUMBER OF RECORDS COMPROMISED : 3BN ACCOUNTS

Yahoo experienced a data breach in 2013 and did not disclose what happened until 2016 , where it revealed that one billion accounts on its network had been impacted . In fact , it was revealed after Verizon Communications acquired Yahoo that the attack had actually affected all three billion of Yahoo ’ s user accounts . Threat actors were able to steal names , birth dates , phone numbers and passwords of users that were encrypted with security that was reportedly simple to crack . The digital hackers were also able to obtain the security questions and backup email addresses used to reset lost passwords .

The Department of Justice charged four men , including two Russian intelligence officers , for the breach in 2017 . 48 August 2024