Yahoo Announces Largest Data Breach Ever; 500 Million Yahoo Accounts Hacked

By on September 22, 2016

Yahoo announced that more than half a billion of user accounts were breached in a 2014 hack.

Yahoo believes the hackers were state-sponsored.  According to Yahoo the hack compromised names, email addresses, telephone numbers, dates of birth, and, in some cases, encrypted or unencrypted security questions and answers.

Typically such stolen information is sold on illegal “dark net” sites to cyber criminals, and this appears to have been the case with the information from the Yahoo hack.   Such information can be used by cyber criminals to break into user’s financial accounts. Many consumers utilize the same or similar usernames and passwords for multiple accounts such as bank accounts, credit card accounts, rewards cards and so on. When these are compromised, criminals empty multiple accounts at once.  For this reason, cyber security experts recommend that people use different sign-on information for different accounts.