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MaxMind Fraud Score Calculation
The score calculated to estimate the riskiness of accepting a
credit card ranges from 0 (low risk) to 10 (high risk) and is
calculated as follows:
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score =
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2.5 * isFreeEmail +
2.5 * countryDoesntMatch +
5 * isAnonymousProxy +
5 * highRiskCountry +
10 * min(distance,5000) / maxEarthArc +
2 * binDoesntMatch +
1 * binNameDoesntMatch +
5 * carderEmail +
5 * highRiskUsername +
5 * highRiskPassword +
5 * shipForward +
2.5 * proxyScore
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Note this formula is capped at 10. maxEarthArc is defined as 20037 kilometers.
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