Tech fixes · Payments & Accounting

# Card Testing Attack Hitting Your Checkout? How to Stop Fake Small Charges

Card testers use bots to try stolen card numbers on your checkout or donation form, often with small amounts. Add bot protection and rate limits to the payment form, tighten your fraud rules, and refund any successful test charges quickly so disputes and fees don’t pile up.

Also searched as: card testing attack · lots of small failed payments · carding attack on WooCommerce · bots testing credit cards on my site

- **Starting price:** From $450

- **Where:** Remote, anywhere in the U.S.

- **Quote:** Fixed price before work starts

## Try this first

- Pause or protect the targeted form right away
- Add a CAPTCHA or Cloudflare Turnstile to the payment form
- Turn on or tighten the fraud rules in your payment processor
- Rate-limit repeated attempts from the same visitor
- Refund successful fraudulent charges quickly
- Tell your processor’s support team about the attack

Common causes

- Payment or donation forms with no bot protection
- “Pay any amount” forms that accept tiny charges
- Old plugins or checkout endpoints bots can reach directly
- No limit on repeated attempts

## When it’s more than a quick fix

If the attack keeps coming back, your processor warns you, or fees and disputes are piling up, the checkout needs proper hardening.

### How we fix it remotely

We stop the attack, add bot protection and rate limits, tune your fraud rules and clean up the charges, usually within a day.

### In-depth guides

- [Stripe Account Under Review or Payouts Paused? How to Respond](https://wisconsintechshop.com/guides/stripe-account-under-review/)

Get it fixed

## How a remote fix works

1. **Tell us what’s happening:** Two minutes with the form on this page. No account needed.
2. **Get a fixed price:** A personal reply within one business day, with the price agreed before any work starts.
3. **We fix it remotely:** You approve access, follow progress and pay in your private client portal.

## Related services

- [Payment Fraud & Chargeback Prevention](https://wisconsintechshop.com/payments/payment-fraud-prevention/): Cut fraudulent orders and chargebacks with tuned fraud rules, verification steps and dispute workflows, without blocking good customers. (From $450)
- [Stripe Integration Services](https://wisconsintechshop.com/payments/stripe-integration/): Connect Stripe to your website, app or point of sale the right way: checkout, subscriptions, invoices and webhooks that update your systems and reconcile cleanly. (From $750)
- [Cloudflare Setup & Consulting](https://wisconsintechshop.com/hosting/cloudflare-setup/): Put your domain and website behind Cloudflare the right way: DNS, SSL, caching, security rules, bot protection and performance tuning. (From $250)

## Questions

### Why are bots charging such small amounts?

They’re checking which stolen cards still work before using them elsewhere.

### Can card testing affect my payment account?

It can. Processors may review or limit accounts that see many fraudulent attempts, so act fast.

### Can you fix this remotely?

We stop the attack, add bot protection and rate limits, tune your fraud rules and clean up the charges, usually within a day.

## More payments & accounting fixes

- [Got a Chargeback](https://wisconsintechshop.com/fix/chargeback-response/)
- [QuickBooks Bank Feed Not Updating](https://wisconsintechshop.com/fix/quickbooks-bank-feed-not-updating/)
- [Duplicate Transactions in QuickBooks](https://wisconsintechshop.com/fix/quickbooks-duplicate-transactions/)
- [Online Store Charging the Wrong Sales Tax](https://wisconsintechshop.com/fix/wrong-sales-tax-at-checkout/)
- [Customers’ Cards Declined at Checkout](https://wisconsintechshop.com/fix/cards-declined-at-checkout/)
- [Switching Payment Processors](https://wisconsintechshop.com/fix/switch-payment-processor-keep-saved-cards/)
- [How to Send Automatic Invoices and Payment Reminders (and Get Paid Faster)](https://wisconsintechshop.com/fix/automatic-invoices-and-reminders/)
- [How to Accept ACH Bank Payments and Cut Card Fees](https://wisconsintechshop.com/fix/accept-ach-bank-payments/)

[All tech fixes](https://wisconsintechshop.com/fix/)

## Want us to just fix it?

Tell us what’s happening. Most problems like this are fixed remotely, often the same day, and every request gets a personal reply within one business day.

- Big projects and small ones are all welcome
- Fixed-price quotes, no surprise invoices
- You own your code, data and accounts
- A client portal to track progress, invoices and payments
- Rooted in Wisconsin, serving businesses nationwide

---
Source: https://wisconsintechshop.com/fix/card-testing-attack/
Contact: hello@wisconsintechshop.com · https://wisconsintechshop.com/contact/