Passing a PCI assessment does not mean you have a functioning PCI program. Security, engineering, compliance, operations, legal, vendors, and leadership may each own part of PCI, but somebody still needs to own the whole program between assessments.

Whether you're buying, selling, or investing in a FinTech company, security due diligence is more than a checklist - it's about reading between the lines. We break down what really matters in tech and security evaluations, and how to avoid expensive surprises post-close.

PCI DSS 4.0.1 Control 6.4.3 (effective April 1, 2025) mandates script authorization, integrity checks, and inventory on payment pages. This guide covers the control, implementation tips, and monitoring tools like CSP headers, securityheaders.com, and Snyk.