Blocklists

One of the most effective ways to prevent friendly or criminal fraud is through the use of blocklists.

What are blocklists?

Blocklists are lists of attribute values that are permanently barred from buying from you. Rebilly has various blocklists each relating to one of the following attributes:

  • Customer IP address - IP address of the customer making the purchase;
  • Customer email - Email address of the customer making the purchase;
  • Customer ID - The Rebilly “customerId” of the customer making the purchase;
  • Payment card - The card number of the payment card being charged;
  • Payment card BIN - The Bank Identification Number of the payment card being charged;
  • Device fingerprint - A string holding information about the software and the device used by the customer making the purchase;
  • Country - The country of the customer making the purchase and/or of the charged payment card’s billing address;

When a customer attempts to make a purchase from you with a credit card or fingerprint that has been flagged on your blocklist, the transaction is blocked from being sent to the payment gateway altogether.

No permanent blocklist

When configuring a blocklist with a TTL (time to live), they will become not permanent. They’re typically used to block weak attributes temporarily — like residential IP addresses, which change frequently.

How does Rebilly use blocklists?

When Rebilly encounters an event that would result in a new Transaction, the blocklists are examined to see if any match can be found on the entity’s relevant attributes. If a match is detected, the operation is aborted to avoid any damage to your business. In the event where blocklisted attributes match on a Subscription during its renewal, it will be canceled.

How does blocklisting benefit my business?

One of the most effective ways to prevent friendly or criminal fraud is through blocklisting. Once you’ve identified patterns and scenarios that generate disputes or other unwanted outcomes, you can add the relevant values to your attribute blocklists to stop further damage to your business.

What’s next?