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About Fraud prevention with IP tracking
General information about Fraud prevention
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A large proportion of fraud attempts come from foreign countries. Paygate
can check the country of origin and, in many cases the city of the IP address used. If the country of origin or the IP address of your customer is not one of your supplies countries or is not the same country as the credit card Issuer, Paygate Multiexcerpt include SpaceWithExcerpt EN MultiExcerptName Platform-Name PageWithExcerpt Wording
can send an alert via e-mail or automatically refuse the payment. Multiexcerpt include SpaceWithExcerpt EN MultiExcerptName Platform-Name PageWithExcerpt Wording
75% of all fraud attempts are made with foreign credit cards. Paygate
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Additional parameters for Fraud prevention
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Additional parameters for calling
Paygate Multiexcerpt include SpaceWithExcerpt EN MultiExcerptName Platform-Name PageWithExcerpt Wording
interface for credit cards
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Fraud prevention via IP-tracking relates to VISA and MasterCard credit cards via Paygate
interfaces payssl.aspx, paynow.aspx and direct.aspx. Multiexcerpt include SpaceWithExcerpt EN MultiExcerptName Platform-Name PageWithExcerpt Wording
For standard integration and other special parameters for making a credit card payment via the payssl.aspx, paynow.aspx and direct.aspx interfaces, please check the credit card handbook.
Notice: By default the fraud prevention functions are not activated. Computop Support
can activate these functions for you if required. Multiexcerpt include SpaceWithExcerpt EN MultiExcerptName Sales-Name PageWithExcerpt Wording
Notice: For security reasons, Paygate rejects all payment requests with formatting errors. Therefore, please use the correct data type for each parameter.
The following table describes the encrypted payment request parameters:
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Additional parameters for Fraud prevention for credit card payments
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The following table gives the parameters with which Paygate responds:
Parameter
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Additional response parameters for fraud prevention for credit card payments
Calling the interface for editing a Blacklist
In order to create, read, update or delete a blacklist entry via a Server-to-Server connection, call the following URL:
Notice: For security reasons, Paygate rejects all payment requests with formatting errors. Therefore, please use the correct data type for each parameter.
The following table describes the encrypted payment request parameters:
Parameter
Format
CND
Description
MerchantID
ans..30
M
MerchantID, assigned by Computop. Additionally this parameter has to be passed in plain language too.
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MAC
an64
M
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Parameters for calling the blacklist editing
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The following table gives the parameters with which Paygate responds:
Parameter
Format
CND
Description
MID
ans..30
M
Merchant ID, assigned by Computop
MAC
an64
M
Hash Message Authentication Code (HMAC) with SHA-256 algorithm
Status
a..30
M
OK or FAILED
Description
ans..1024
C
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Result parameters for calling the blacklist editing
BlackListInfo
Following table describes the BlackListInfo object for EventToken Insert:
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Parameters for blacklist editing, EventToken Insert
Following table describes the BlackListInfo object for EventToken Update:
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Parameters for blacklist editing, EventToken Update
Following table describes the BlackListInfo object for EventToken Delete:
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Parameters for blacklist editing, EventToken Delete
The following table describes the BlackListInfo object with which the Paygate responds:
Parameter
responds: Multiexcerpt include SpaceWithExcerpt EN MultiExcerptName Platform-Name PageWithExcerpt Wording
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ans..30
M
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an64
M
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Result parameters for blacklist editing