CRITICAL EXPOSURE
Sector: Technology / Search Engine
Yahoo Inc.
Targeted Breach
The largest data breach in history. Every single Yahoo account was compromised. Threat actors affiliated with a state-sponsored hacker group exfiltrated names, email addresses, telephone numbers, encrypted passwords, and security questions. They created forged cookies allowing access without passwords.
Total Assets Compromised
3 Billion Accounts
Primary Kill Chain Vector
Spear Phishing / Cookie Forgery
Incident Timeline Marker
August 2013
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