Guides: ChargeWarden
Research for people running WordPress and WooCommerce stores. Every guide lists its sources and the date we last checked them. RSS
Card-testing and fraud protection for WooCommerce, with ACH return monitoring for BankBridge stores. See ChargeWarden and its plans
- ChargeWarden
Visa VAMP 2026: Why Card Testing Costs More
Visa's VAMP explained for online stores: the 1.5% threshold since 1 April 2026, how the ratio works, the card-testing enumeration rules, and what to do now.Updated · 6 min read - ChargeWarden
WooCommerce Anti-Fraud Plugins Compared
WooCommerce anti-fraud plugins compared on what stops card testing: OPMC Anti-Fraud, YITH, FraudLabs Pro, free blocklists, gateway tools and ChargeWarden.Updated · 7 min read - ChargeWarden
ACH Return Codes: What Each One Means
ACH return codes R01 to R85 explained for online stores: what each common code means, its return window, whether you can retry, and what to do next.Updated · 7 min read - ChargeWarden
Nacha Return Rate Thresholds: 0.5%, 3% and 15% Explained
The Nacha return rate levels for ACH debits (unauthorized 0.5%, administrative 3%, overall 15%), which return codes count, how to calculate them over 60 days, with a worked example for an online store.Updated · 3 min read - ChargeWarden
PCI DSS 6.4.3 and 11.6.1 for WooCommerce: Payment Page Scripts
What PCI DSS v4.0.1 requirements 6.4.3 and 11.6.1 ask of WooCommerce stores since 31 March 2025, how the January 2025 SAQ A change and FAQ 1588 affect stores using Stripe, PayPal or WooPayments card fields, and a practical script inventory process.Updated · 4 min read - ChargeWarden
WooCommerce Card Testing: How to Stop It on Classic and Block Checkout
What WooCommerce card testing is, why attackers target the Store API checkout endpoint, what WooCommerce core already offers, and the limits, challenges and checks that stop it.Updated · 4 min read - ChargeWarden
Nacha Fraud Monitoring Rule 2026: What Online Stores Must Do
Nacha's 2026 fraud monitoring rules in plain English: Phase 1 (20 March 2026) and Phase 2 (19 June 2026) dates, who is covered, what 'risk-based processes' means for a store taking ACH debits, and what evidence to keep.Updated · 4 min read