Checkout Shield for WooCommerce
Your CAPTCHA protects the form. This protects the API. Most store owners don't realize the attacks aren't even hitting their checkout page.
Checkout Shield Classic Checkout and Checkout Blocks Protection
Checkout Shield protects both classic WooCommerce checkout and WooCommerce Checkout Blocks. Customers do not need to solve a CAPTCHA or complete an extra step.
How protection works
The plugin validates checkout context using signals such as a hidden checkout token, browser cookie, WooCommerce session data, and request timing. If a request does not look like a real shopper session, Checkout Shield can log or block it depending on the selected protection mode.
Classic checkout
Classic checkout is protected during the standard WooCommerce checkout form submission. Test the full journey from product page to payment confirmation after enabling protection.
Checkout Blocks
Checkout Blocks are protected through the Store API checkout flow. Because block checkouts can be affected by optimization plugins, test with your active theme, payment gateway, tax plugins, and cache configuration.

Compatibility notes
- Payment gateway redirects should be tested after enabling protection.
- Headless or fully custom checkouts may require API key support.
- Cache or CDN rules should not strip checkout cookies or session data.