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Established in 2014, the OPMC Anti-Fraud plugin is The Original fraud prevention plugin for WooCommerce.
Effective Card Attack PreventionPowerful and reliable card attack prevention, irrespective of attack volume. Also known as velocity attacks. |
Powerful AI Fraud PreventionConnect to your ChatGPT account for a powerful AI based expert fraud & card attack detection. |
Extensive Rule Based ControlsUtilise OPMC’s comprehensive granular, rule based fraud prevention software tools to prevent and control ecommerce fraud. |
World Class ExpertiseOPMC has specialised experience in eCommerce fraud prevention, advising and working with thousands of eCommerce merchants since 2014. |
New Features Every MonthWe add new features and new levels of fraud protection as often as once a week. |
5 Star ReviewsOPMC’s fraud & card attack solution has dozens of 5 star reviews. |
We’ve been making major reliability improvements to the plugin this month. This includes improved reliability for preventing Paypal based card attacks, resolving many reCaptcha security hiccups, and overall ensuring the plugin is able to protect sites from card attacks in a higher percentage of cases.
For the technical folks out there, we’ve also recently added more endpoint security, to block more attempts that are common from fraudsters/hackers.
Check out some of the recent new features below!
Card Attack CleanupWe’ve recently released a new feature – card attack clean up. We’ve listened – when you have experienced a card attack, you want to be able to clean it up quickly – not in hours or days. This new feature allows you to see and quickly remove likely failed fraudulent attempts that are clogging up your store. |
Suppress order emails for card attack ordersCard attacks can create thousands of emails into your store and thousands of bounce back emails which land in your inbox. This release allows you to stop these emails from going out in the first place, so if you do have a card attack you’re not spammed. |
Chargeback supportWe now give you access to leading tools from Kount to more easily handle chargebacks. Sign up within the plugin, and start managing chargebacks. |
Improved ease of useWe’ve taken on board your feedback about usability, and made a dozen small improvements to how the plugin works and looks so it’s easier to use and understand. |
✅ Whitelisting – New features, better support.
✅ API Endpoints – More granular control on what you block and what you allow.
✅ General – Enhanced reliability of card attack prevention in more cases.
Gain peace of mind by protecting your eCommerce store against credit card testing and velocity attacks. Reach out to OPMC to discover how the WooCommerce Anti-Fraud Plugin can safeguard your store and customers.
We invest thousands of hours annually in our fraud prevention software, resulting in a new release every 1-2 weeks.
WooCommerce Anti-Fraud is the premier off-the-shelf fraud & card attack prevention solution for eCommerce merchants. Equipped with powerful payment fraud & card attack detection tools, it helps you identify and stop fraudulent transactions and credit card fraud in real time. This plugin continuously scans for suspicious activity, blocking threats before they can impact your business. With advanced scoring rules assessing every transaction, you have peace of mind knowing your store is secure and protected.
✅ 10+ Years – Our fraud & card attack plugin has been around since 2014.
✅ Regular updates – 20+ Annual product releases.
✅ Block card attacks quickly – Best in class card attack support for a wider number of stores.
Full control over how you prevent eCommerce fraud on your WooCommerce store.


If a potentially fraudulent transaction is detected, the WooCommerce Anti-Fraud will automatically block or prevent these orders based on your specific configuration. The plugin can easily be configured to perform one or more of the following automated actions:
WooCommerce Anti-Fraud works out of the box – no need for additional rule configuration. We have defined a collection of default rules that automatically assess and scores each transaction. These pre-configured rules are suitable for most online stores. Moreover, you can easily customize the rules to suit your preferences with just a few clicks and to place higher or lower importance on specific factors/rules.
The WooCommerce Anti-Fraud plugin lets you assign a ‘risk weight’ to each risk factor. This means that you can decide how important each risk is and configure this to your specific sotore. The higher the risk weight for each category, the higher the consideration will be given to the rule in calculating the overall risk score when the risk is detected.

Identify first-time customers or their initial order in a processing state. This rule also allows you to
recognize new customers. Allow Antifraud to understand and make it easier for your existing clients to shop and repurchase.

WooCommerce Anti-fraud now includes integration with the Maxmind minFraud Score tools. Now, combine existing rules with a smart real-time risk score for each order. This feature gives you an extra layer of security by assessing orders for fraudulent activities using a smart machine learning algorithm by MaxMind. Enabling this feature, you will be notified about the status of the order when the risk score exceeds the threshold set in the minFraud Settings.

These two features can help you reduce chargebacks effectively. You can set the maximum buying amount, number of products and even weighting based on the type of products you are selling to counter fraudulent activities.
Gain access to OPMC’s experienced team to advise on your ecommerce fraud prevention matters, and access advice for more complex needs and challenges.

WooCommerce Anti-Fraud plugin automatically assigns a risk score to each order on a scale of 1 to 100. The higher the score, the greater the likelihood of the order being fraudulent. This is called the risk score. Examining the risk score enables you to quickly evaluate the potential risk associated with the transaction and take the appropriate defensive actions. You can find the risk score and receive advice for each order directly within the WooCommerce admin panel.
Beneath the risk score, users can see any warnings linked to the order. The advice provided is related to the rules in place (for example, if a customer’s IP address doesn’t match the billing country). The higher this number is, the more likely it is that the order is potentially fraudulent.


Bypass user roles, payment methods and emails from fraud rules by whitelisting them.

Evaluate customers before they make actual purchases through your Payment Gateway.
Payment Gateway or Bank warning you about too many fraudulent transactions? Pre-payment Verification can help.
If the risk score reaches a high-risk order range, the customer order will be denied in advance, a custom message will appear on the checkout explaining the reason for denial. Add a custom message by typing in the text area in the pre-purchase setting.
Identify threats based on IP, geolocation, phone number, proxy, billing and shipping addresses.


The Anti-Fraud for WooCommerce plugin extends to powerful integrations with 3rd party services (charges may apply). These include:
Yes, the plugin has specific features which are designed to stop card attacks in their tracks, when configured correctly. Our team will assist you with this process, and provide support should you be experiencing difficulty.
OPMC aims to release new versions of the plugin every 1-2 weeks.
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