Yahoo breach (2014)
Date of report
  • September 2016
  • Same state sponsor as the 2016 breach
A threat actor compromised over approximately five hundred million accounts, giving it access to the names, email addresses, telephone numbers, and dates of birth associated with the accounts. Yahoo discloses that the compromise took place in 2014.
Suspected victims
  • Yahoo
Suspected state sponsor
  • Unknown
Type of incident
  • Espionage
Target category
  • Private sector
Victim government reaction
  • Unknown