Subject: Preventing Carding Attacks - UltraCart Knowledge Base
From: UltraCart Support Team <[email-masked]>
To: Deeksha Dadu <[email-masked]>
Date: Thu, 13 May 2021 14:41:44 +0000

UltraCarts Fraud Prevention system provides the tools to block costly carding
attacks

UltraCart Knowledge BasePreventing Carding Attacks

Carding is an attack where stolen or pre-paid credit cards are tested for
validity before being sold to other individuals. The industry refers to people
performing these attacks as "carders".

As a Merchant, the major problem with not preventing carding attacks against
your site are the aggregated transaction fees that your financial institution
charges when a credit card transaction is attempted. An ounce of prevention is
far easier than having to work with your financial institution after suffering a
carding attack.

Docs - Prevent Carding Attacks ( https://ultracart.atlassian.net/wiki/spaces/ucdoc/pages/2202796033/Preventing+Carding+Attack?utm_source=ultracart&utm_medium=email&utm_campaign=Knowledge+Base+-+Preventing+Carding+Attacks&utm_content=827e6627-3ae4-4e11-925c-c81ca51cb38e%7Ccfe7c8de-7c7a-4b64-8a82-d86f52cb9703%7C50ec19fd-9faa-4345-aaae-92a8938f7174%7Cc74e4fad-38be-43f0-9e32-d0dc24e764d6 )

Blocking a Carding Attack

The simplest way to prevent a carding attack is to limit the number of
transaction attempts allowed per IP address using the Fraud Prevention system.
To do this, first navigate to Configuration > Checkout > Fraud Prevention

Scroll to the IP/Subnet Rules section and configure daily and weekly attempt
thresholds by IP. For example:

* If daily attempted transaction count for IP address exceed 5 - Flag For
Review.
* If weekly attempted transaction count for IP address exceed 10 - Flag For
Review.

Flagging transactions for review will move your orders to Accounts Receivable
with notes about the tripped fraud rule. In case legitimate transactions were
flagged, you can review and approve any of these flagged attempts.

Exempting IP Address

If you have a call center placing orders for customers by driving your checkout,
to prevent processing problems, make sure you exempt their IP address using the
exemption filters available at the top of the fraud prevention section.

Pro Services

Need some help getting started? UltraCart can help you get up and running
quickly. We're here to assist you with general account information, payment
processing configuration, StoreFront set up, basic shipping set up, and more.

Contact Pro Services ( https://www.ultracart.com/help/pro-services.html?utm_source=ultracart&utm_medium=email&utm_campaign=Knowledge+Base+-+Preventing+Carding+Attacks&utm_content=827e6627-3ae4-4e11-925c-c81ca51cb38e%7Ccfe7c8de-7c7a-4b64-8a82-d86f52cb9703%7C50ec19fd-9faa-4345-aaae-92a8938f7174%7Cc74e4fad-38be-43f0-9e32-d0dc24e764d6 )

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