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A fair number of risk-assessment vendors do that. Usually they consider more data than just email address. Riskified, Sift, and Signifyd are 3 of the better-kno
by troydavis 4y ago
A fair number of risk-assessment vendors do that. Usually they consider more data than just email address. Riskified, Sift, and Signifyd are 3 of the better-known ones.
- gajus 4y agoThe three you mentioned don't allow self-sign up annoyingly. I tested a few others I found on Google and unfortunately it looks like just email alone does not flag them as fraudulent – even though we know for sure that these specific users are fraud.