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Facebook announced on Friday that it has suffered a data breach affecting up to 50 million users.
Attackers exploited vulnerabilities in the code for Facebook's "View As" feature, enabling them to abscond with access tokens (think fancy, security-based cookies) which could then be used to hijack the target account. Spokespeople for the company were unable to confirm if this data breach was in any way related to a hacker's threats to delete Mark Zuckerberg's account on a livestream from earlier in the day.