Yahoo Confirms Breach of Over 1 Billion Accounts Linked to State-Sponsored Actors
ID: 3f1a1d5d-3210-5cc0-ba23-514fd43441ca
STIX ID: report--3f1a1d5d-3210-5cc0-ba23-514fd43441ca
Feed Name: ThreatCluster
Threat Score
Yahoo disclosed a large historic breach (August 2013) impacting more than one billion user accounts, reportedly conducted by state-sponsored actors who forged authentication cookies to access accounts without passwords; exposed data may include personal identifiers and MD5-hashed passwords, and Yahoo is forcing password resets and invalidating cookies while forensic analysis continues.
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