Multi-factor authentication (also Two-factor authentication, TFA, T-FA or 2FA) is an approach to authentication which requires the presentation of two or more of the three authentication factors: a knowledge factor ("something the user knows"), a possession factor ("something the user has"), and an inherence factor ("something the user is").
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Here's how to keep advertisers from using your phone number on Facebook
A Gizmodo report on Wednesday detailed the latest in a long series of Facebook privacy blunders. The report said, and Facebook ...
