Facebook said there is no evidence its employees abused access to this data. But thousands of employees could have searched them. The company said the passwords were stored on internal company servers, where no outsiders could access them. Even so, some privacy experts suggested that users change their Facebook passwords.
Facebook left hundreds of millions of user passwords readable by its employees for years, the company acknowledged Thursday after a security researcher exposed the lapse. By storing passwords in readable plain text, Facebook violated fundamental computer-security practices. Those call for organizations and websites to save passwords in a scrambled form that makes it almost impossible to recover the original text.
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