• Stopping fraudulent accounts from coming into Facebook in the first place is the best method to combat them. That's why we developed detection software that can detect and block accounts even before they're established. Our algorithms monitor a variety of indicators to see if accounts are being created in bulk from a single location. A simple example is preventing specific IP addresses from accessing our systems and, as a result, from creating accounts.
• By recognising signals of criminal conduct, our powerful detection systems scan for prospective fraudulent accounts as soon as they join up. These technologies combine indications such as suspicious email address patterns, suspicious activities, and other signals previously connected with other phoney accounts we've eliminated.

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