catch-22

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Facebook to exclude phone numbers from reverse lookup - for users of two-factor authentication, anyway

Facebook to exclude phone numbers from reverse search - for users of two-factor SMS authentication, anyway

Facebook's SMS-based login security was a Catch-22. You had to give Facebook your phone number to improve security. But that exposed your phone number to the vagaries of the Facebook search system.

That's now changed, but apparently only temporarily, while Facebook decides what happens next.