Fighting spam with Haskell - Facebook Engineering

One of our weapons in the fight against spam, malware, and other abuse on Facebook is a system called Sigma. Its job is to proactively identify malicious actions on Facebook, such as spam, phishing attacks, posting links to malware, etc. Bad content detected by Sigma is removed automatically so that it doesn’t show up in [...]Read More...

26 Jun 2015 ... Sigma is a rule engine, which means it runs a set of rules, called policies. Every interaction on Facebook — from posting a status update to ...

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