Nearly 50-million Facebook users are vulnerable following a security breach announced today. Officials at Facebook say hackers used a vulnerability in their system yesterday to access log in information and control the accounts. Specifically, the hackers compromised digital keys that people use to stay logged in on their devices, instead of having to regularly sign back in. Facebook is still investigating the breach but they've reset the log-ins for a total of 90-million accounts for extra caution.
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