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MaxMind Fraud Score Calculation
The "score" value returned by the minFraud service versions 1.0-1.2 represents the estimated riskiness of an order and is part of the minFraud output for versions 1.0 to 1.2. We recommend that you use the riskScore and not the score when assessing the riskiness of a transaction. See the riskScore FAQ for information on the riskScore.
The "score" 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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