PCI DSS Penetration Testing
PCI DSS requirement 11.4 mandates internal and external penetration testing and segmentation validation. We deliver exactly that, with a report your QSA will accept.
What is PCI DSS Penetration Testing?
PCI DSS requirement 11.4 mandates internal and external penetration testing plus segmentation validation. We deliver exactly that, focused on the cardholder-data environment, with a report your QSA will accept.
PCI DSS is explicit: requirement 11.4 calls for internal and external penetration testing and for validating that segmentation actually isolates the cardholder-data environment. We deliver exactly that, scoped around the CDE, and produce a report structured the way a QSA expects — proving both that the environment is tested and that out-of-scope systems truly can't reach cardholder data.
PCI DSS testing also protects you from the specific way assessments fail: an out-of-scope system that turns out to have a path into the cardholder-data environment. Segmentation validation exists precisely to catch this, and getting it wrong means either a failed assessment or, worse, a genuine breach of card data. We prove isolation rather than assume it.
PCI DSS Penetration Testing is a manual, exploit-driven assessment: real people attacking your target the way an adversary would, then proving each finding with a working proof of concept. It is not an automated scan with a logo on it — the point is to find and demonstrate the issues that actually put you at risk, and hand your team a clear plan to fix them.
Why it matters
Regulators and auditors increasingly expect evidence of real security testing, not a checkbox. A credible penetration test both satisfies the requirement and genuinely reduces the risk the regulation exists to address.
A pci dss penetration testing engagement replaces guesswork with evidence. Instead of hoping your controls hold, you get a ranked, reproducible picture of where they don’t — before someone hostile finds the same gaps.
Industries & use cases
PCI DSS testing is mandatory for merchants and service providers that store, process or transmit cardholder data — e-commerce, payment platforms, hospitality and retail especially.
What we test
Manual, exploit-driven coverage focused on real impact — not scanner noise.
- External and internal penetration testing
- Segmentation validation
- Application-layer testing
- Cardholder-data environment focus
- Requirement 11.4-aligned reporting
- Free remediation retest
Signs you should run a pci dss penetration testing
If any of these apply, testing is overdue.
- You store, process or transmit cardholder data
- You need to meet requirement 11.4
- You rely on segmentation to reduce PCI scope
- Your QSA expects internal and external testing
- You've changed systems since your last assessment
Common vulnerabilities we find
The issues that show up again and again in pci dss penetration testing — and the ones that actually get exploited.
CDE exposure
Paths into the cardholder-data environment.
Segmentation failure
Out-of-scope systems able to reach the CDE.
Application-layer flaws
Payment-page issues jeopardising compliance.
Insufficient segmentation
Out-of-scope systems with a network path into the CDE.
Payment-flow application flaws
Vulnerabilities in payment pages or APIs handling card data.
Cardholder-data exposure
Card data reachable through application or access-control flaws.
Weak access control to the CDE
Insufficient authentication or authorization around card systems.
Unpatched systems in scope
Known vulnerabilities on in-scope hosts failing the requirements.
Example attack chain
Real impact rarely comes from one bug — it comes from chaining several. A representative example:
Why choose webhook.press
Attacker mindset
We’re offensive security people who also build the free tools bug-bounty hunters use daily. We test the way real adversaries do — and prove it.
No scanner theatre
You get findings a human exploited and verified, ranked by real business risk — not an unfiltered tool dump padded to look thorough.
Fixed price, free retest
A clear quote after scoping, a report your team and auditors can use, and a free retest to confirm the fixes hold.
Our methodology
A structured, transparent process aligned to OWASP and PTES — with a named point of contact throughout.
Scoping & rules of engagement
We agree the exact targets, depth, timing and constraints for your pci dss penetration testing, and set clear rules of engagement so testing is safe and predictable.
Reconnaissance & mapping
We enumerate the full attack surface — endpoints, roles, technologies and trust boundaries — and threat-model where an attacker would focus.
Manual testing & exploitation
We attack by hand, verifying and chaining weaknesses into real impact. Automated tooling supports coverage; humans find the logic and authorization bugs it can’t.
Analysis & risk rating
Each finding is validated, rated by real business risk rather than raw scanner severity, and de-duplicated so you get signal, not noise.
Reporting
You receive an executive summary for leadership and a technical section with reproducible PoCs, evidence and concrete, stack-specific remediation.
Free retest
After you remediate, we re-test the closed findings to confirm they are actually fixed — at no extra cost.
What you get
Reproducible PoCs
Every finding ships with a working proof and step-by-step reproduction your engineers can replay and verify.
Risk-ranked findings
Prioritised by real business impact, so you fix what matters first instead of drowning in low-severity noise.
Actionable remediation
Concrete, stack-specific fixes and guidance — not generic “apply best practice” filler.
Free retest
We re-check the closed findings after remediation and confirm they’re resolved.
The report is written for two audiences at once: an executive summary that a non-technical stakeholder can act on, and a detailed technical section — findings, evidence, CVSS and reproduction — that your developers and auditors can use directly.
Manual testing, not just a scan
Automated scanners are fast and useful for coverage, but they only find patterns they already know, and they flood you with false positives. They cannot understand your business logic, chain several small issues into a breach, or tell you which alert actually matters. Our pci dss penetration testing is led by experienced testers who exploit findings by hand and rank them by the damage they’d really do — the difference between a 300-page tool dump and a short list of things worth fixing.
Standards & compliance
Our pci dss penetration testing reports are written to support the frameworks your auditors and customers care about — including SOC 2, ISO 27001, PCI DSS, HIPAA, GDPR, and the EU’s NIS2 and DORA. Each engagement produces clear, independent evidence of testing with scope, methodology and findings documented the way assessors expect, so the same test both hardens your systems and helps satisfy your obligations.
Frameworks we follow
Recognised methodologies, adapted to your target — never a rigid checklist.
- OWASP — Web Security Testing Guide, ASVS and the API Security Top 10
- PTES — the Penetration Testing Execution Standard
- NIST SP 800-115 — technical guide to security testing
- OSSTMM — Open Source Security Testing Methodology Manual
- MITRE ATT&CK — to frame real-world adversary techniques
FAQ
Does it meet requirement 11.4?
Yes — our scope and reporting align to the PCI DSS 4.0 penetration-testing requirements.
Do you test segmentation?
Yes — segmentation checks confirming the CDE is properly isolated are included.
Does this meet requirement 11.4?
Yes — our scope and reporting align to the PCI DSS 4.0 penetration-testing requirements.
Do you validate segmentation?
Yes — segmentation checks confirming the CDE is properly isolated are included.
Do you help right-size PCI scope?
Yes — segmentation testing confirms which systems are truly out of scope, which can reduce your assessment burden.
Internal and external both?
Yes — requirement 11.4 calls for both, and we deliver both with QSA-ready reporting.
How long does a pci dss penetration testing take?
Most focused engagements run one to two weeks depending on scope; we agree the exact timeline during scoping.
Is a retest included?
Yes — after you remediate, we re-check the closed findings to confirm they’re fixed, at no extra cost.
How do you price it?
Per engagement, based on scope and depth — you get a fixed quote after a short scoping call. No cookie-cutter packages.
Why teams trust our pci dss penetration testing
Aligned to recognised standards
Testing follows OWASP, PTES, NIST SP 800-115 and MITRE ATT&CK, and reports support SOC 2, ISO 27001, PCI DSS, HIPAA, GDPR, NIS2 and DORA.
Every engagement includes
Reproducible PoCs, risk-ranked findings, concrete remediation, a named point of contact, a free retest, and a summary letter of attestation.
Confidential by default
Work is covered by an NDA, scoped with clear rules of engagement, and data is handled with care throughout — including residency requirements.
Sample report available on request — see our reporting format and depth before you commit. Ask for a sample →
Get a quote for PCI DSS Penetration Testing
Tell us about the target — we’ll come back with scope and a fixed price. Manual, exploit-driven testing with reproducible proof and a free retest.