How to Automatically Blacklist Emails and IPs Based on Fraud Score

Fraud Prevention For WooCommerce can stop repeat fraud by adding high-risk checkout details to your blacklist.

You can still type emails and IPs into the lists yourself. You can also let the plugin add them when an order’s fraud score goes above your High Risk threshold. Separate toggles control whether those lists actually block checkout.

For example, a customer places a high-risk order. If automatic email or IP blocking is on, that email or IP is added to the list so the next attempt is blocked.

Benefits

These settings help you:

• Stop the same email or IP from placing another high-risk order
• Keep a list without using it, if you need to pause blocking
• Add only the high-risk details you choose — email, IP, or both

How to Automatically Blacklist Emails and IPs

Step 1: Turn on Fraud Score Check

Automatic email and IP blacklisting only runs when Fraud Score Check is on and Protection Mode is not Monitor Only.

1. Go to Fraud Prevention → General Settings.
2. Enable Fraud Score Check.
3. Set your High Risk threshold.
4. Click Save Changes.

Step 2: Open Blacklist Settings

Go to Fraud Prevention → Blacklist Settings.

Email options sit under Blocked Email Addresses. IP options sit under Blocked IP Addresses.

Step 3: Set the email blacklist options

Under Blocked Email Addresses:

Turn on Automatic Blacklisting if you want high-risk emails added for you. The helper text under that switch is: Add email addresses of orders reported with a high risk of fraud to blacklist automatically.

You can leave the list toggle off and still collect emails. Checkout is not blocked by the list until the first toggle is on.

Step 4: Set the IP blacklist options

Under Blocked IP Addresses:

Use the automatic IP option when the same network keeps sending high-risk orders.

Step 5: Save and check a high-risk order

1. Click Save Changes.
2. Place a test order that scores above your High Risk threshold.
3. Open Blacklist Settings again. The test email and/or IP should appear on the list if those automatic options are on.
4. Try checkout again with the same email or IP. You should see your block message only if the matching list toggle is on.

Whitelisted emails, IPs, roles, payment methods, names, and phones are not auto-added.

Example Use Cases

Repeat high-risk emails

If the same address keeps scoring high, turn on Automatic Blacklisting and Block orders from email addresses on the list below.

Shared or proxy IPs

If many failed or high-risk orders come from one IP, turn on Automatically block IP addresses identified as high risk.

Pause blocking without clearing the list

Turn off the email or IP list toggle. The values stay saved. Automatic add can still run if that option is on.

Conclusion

You can add high-risk emails and IPs by hand, or let the fraud score do it. The list toggles decide whether those values block checkout. Save the settings, then confirm with a high-risk test order.

FAQs

1. Where do I find these settings?

Fraud Prevention → Blacklist Settings, in the Blocked Email Addresses and Blocked IP Addresses rows. Automatic add also needs Fraud Score Check on General Settings.

2. What is the difference between the list toggle and automatic blacklisting?

The list toggle blocks checkout against values already on the list. Automatic blacklisting only adds a high-risk email or IP to that list. Turn on both if you want add and block.

3. Does Monitor Only mode still add emails and IPs?

No. In Monitor Only, the plugin scores the order for review and does not add the email or IP automatically.

4. Can I use automatic IP blocking without automatic email blacklisting?

Yes. The email and IP options are separate. Enable only the ones you need.