The Kernova Intelligence Brief

Practitioner-level security research. Compliance analysis without the jargon. Engineering insights from teams who've shipped it.

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PCI DSS 4.0 Requirement 6.4.3: The Hidden Threat in Your Payment Scripts

Most fintech teams missed the script integrity requirement buried in PCI DSS 4.0. Here's a technical deep-dive into the new mandate, what it means for third-party JavaScript on payment pages, and how to build a compliant script inventory.

MW

Marcus Wen

Lead Security Engineer

11 min read

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