"We use a validated Braintree payment iframe, meaning we are completely outsourcing our card data and are eligible for the simple SAQ A compliance form. However, our server was compromised, and our customers' card data was stolen. Our bank says we are disqualified from SAQ A and face hundreds of thousands of dollars in audit fees and PCI fines."
Just because you use a secure payment window doesn't mean your website is safe. If hackers break into your main website (like your WordPress or Shopify server), they can't look inside your secure payment window, but they can easily build a fake, lookalike window right next to it, tricking your customers into typing their credit card numbers directly into a hacker-controlled server.
Attackers compromise CMS servers or third-party plugin dependencies to run web skimming campaigns (Magecart). While the Same-Origin Policy (SOP) prevents scripts on the parent page from reading card inputs inside a cross-origin iframe, attackers bypass this by altering the parent page's JavaScript loader to swap out the secure iframe URL with an attacker-controlled lookalike iframe served from a lookalike domain, capturing PAN and CVV data before forwarding the transaction to the legitimate gateway.
We enforce a strict Content Security Policy (CSP) combined with Subresource Integrity (SRI) hashes on all external imports. If an attacker attempts to inject a lookalike iframe or alter client-side loader scripts, the browser instantly identifies the hash mismatch or un-whitelisted domain, blocking execution and terminating the attack in under 60 seconds.
Outsourcing card data fields is insufficient against DOM-level loader hijacking. VALZOX mathematically locks your frontend execution paths via strict CSP and SRI hashing to eliminate SAQ A compliance degradation.
> [Cmd + Enter Initiate Secure Phase 1 Audit