PCI DSS Compliance

The Payment Card Industry Data Security Standard is one of the few compliance frameworks that explicitly mandates penetration testing rather than just implying it — if you store, process, or transmit cardholder data, PCI DSS requires regular, structured testing of your cardholder data environment (CDE), not just general security hygiene.

What PCI DSS Actually Requires

• Annual and post-change penetration testing — both internal and external testing of the CDE, plus testing after any significant infrastructure or application change.
• Network segmentation validation — if you rely on segmentation to reduce PCI scope, that segmentation itself has to be tested and proven effective, not just assumed.
• Quarterly vulnerability scanning — by an Approved Scanning Vendor (ASV) for external-facing systems in scope.
• Strong access control and encryption requirements for cardholder data at rest and in transit, with strict requirements around key management.

PCI DSS v4.0 raised the bar further, with an increased emphasis on continuous, risk-based security rather than point-in-time compliance — the standard's own direction is moving toward exactly the continuous model Alastor InfoSec is built around.

Where Alastor InfoSec Fits

Alastor Pulse delivers PCI-scoped penetration testing on the cadence the standard actually requires — annual and post-change testing, with segmentation validation included, and findings that map directly to PCI DSS requirements instead of a generic pentest report your QSA has to manually cross-reference.

Alastor Shield handles the ongoing evidence trail between assessments: vulnerability scan history, access control documentation, and change-driven testing records, so your annual Report on Compliance (RoC) or Self-Assessment Questionnaire (SAQ) doesn't require reconstructing a year of activity from scattered spreadsheets.

Common Gaps We See

• Segmentation assumed, never tested — reducing PCI scope on paper without penetration testing evidence that the segmentation actually holds.
• Testing that happens once a year and stops — missing the required retest after a significant CDE change mid-cycle.
• Vulnerability scans and pentests treated as unrelated activities — instead of one continuous testing program that satisfies both requirements together.

Who Needs This

Any business that stores, processes, or transmits cardholder data — e-commerce platforms, payment processors, fintechs, and any merchant or service provider handling card transactions — falls under PCI DSS, with scope and assessment level (SAQ vs. full RoC) determined by transaction volume and how card data is handled.

Talk to our team about scoping PCI DSS-aligned penetration testing for your cardholder data environment.