How the security breach that made 50M Facebook accounts vulnerable to takeover worked and what information may have been accessed (Wired)

Wired:
How the security breach that made 50M Facebook accounts vulnerable to takeover worked and what information may have been accessed  —  FACEBOOK'S PRIVACY PROBLEMS severely escalated Friday when the social network disclosed that an unprecedented security issue, discovered September 25, impacted almost 50 million user accounts.

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