BREACHCONFIRMED
Yahoo! Inc. Data Breach
technology • technology
500,000,000
Records Affected
Aug 3, 2016
Disclosed
unknown
Attack Vector
state-sponsored actor
Threat Actor
Data Exposed
NamesEmail AddressesPhone NumbersDates of Birth
Timeline
OccurredJanuary 1, 2014
DiscoveredSeptember 22, 2016
DisclosedAugust 3, 2016
Related Coverage
Last updated: February 6, 2026