Prove Compliance, Protect Cardholder Data, and Sleep Better at Night
Meet the letter and the spirit of PCI‑DSS with expert penetration testing tailored to your Cardholder Data Environment (CDE).
We deliver evidence-backed results that satisfy assessors, strengthen defenses, and give you peace of mind—globally.
What Is PCI‑DSS (and Why It Matters for Your Business)
The Payment Card Industry Data Security Standard (PCI‑DSS) is the global baseline for protecting cardholder data. If your organisation stores, processes, or transmits Primary Account Numbers (PAN) or other sensitive authentication data, PCI‑DSS compliance isn’t optional—it’s a contractual obligation with your acquiring bank and the card brands. Beyond avoiding fines and reputational damage, PCI‑DSS helps you operationalise good security practice, reduce fraud risk, and maintain customer trust.
PCI‑DSS focuses on twelve high-level requirements—from building and maintaining secure networks and systems to regularly monitoring and testing them. Within that, penetration testing plays a critical role: it’s how you demonstrate, with objective evidence, that your controls can resist realistic attacks—not just pass a policy review.
Why a PCI‑DSS Pentest Is Required
Penetration testing is a mandated activity under PCI‑DSS for in-scope entities. Practically, it enables you to:
- Validate the effectiveness of security controls protecting your CDE (e.g., firewalls, WAFs, authentication, segmentation, patching, encryption).
- Verify network segmentation (if used to reduce scope) so that non‑CDE systems cannot access the CDE through exploitable paths.
- Identify exploitable weaknesses across applications, networks, wireless, and cloud before adversaries do.
- Generate audit‑ready evidence that you regularly test, remediate, and improve your security posture.
In short, a PCI‑DSS pentest isn’t a checkbox—it’s the most credible way to prove your environment is resilient to real‑world threats while meeting compliance requirements.
Objectives of a PCI‑DSS Penetration Test
Our PCI service is built around outcomes that matter to assessors, defenders, and executives:
- Assure CDE Segmentation & Scope Integrity
Demonstrate that your segmentation controls truly isolate the CDE from out‑of‑scope networks and systems. - Uncover and Exploit Realistic Attack Paths
Move beyond surface scanning to show how issues chain together into business‑impacting compromise—and how to break those chains. - Validate Control Effectiveness
Confirm that authentication, authorisation, logging/monitoring, patching, and hardening controls work as intended in production. - Deliver Actionable, Prioritised Remediation
Provide clear fixes, risk ratings, and quick wins that reduce likelihood and impact, not just lists of vulnerabilities. - Produce Audit‑Ready Evidence
Supply reproducible steps, proof of exploitation where appropriate, and mapping to PCI‑DSS testing expectations, simplifying assessor review.
Main Areas Mandated in a PCI‑DSS Pentest
While your exact scope depends on how your environment handles cardholder data, most PCI pentests include the following domains:
External Network Penetration Test
Simulates an internet‑based attacker targeting public‑facing systems—evaluating exposed services, TLS posture, WAF/CDN protections, misconfigurations, and known vulnerabilities.
Internal Network Penetration Test
Assesses risk from a compromised workstation or insider threat—testing lateral movement, privilege escalation, vulnerable internal services, and access to the CDE.
Segmentation Testing
If segmentation reduces your PCI scope, formal testing verifies that enforced rules prevent access from non‑CDE zones to CDE assets—even through indirect paths and misconfigurations.
Web Application Security Testing
Deep, OWASP‑aligned testing of payment portals, admin consoles, and business‑critical web apps used to process or support card transactions—covering authentication, session management, authorisation, input validation, injection, and business logic abuse.
Mobile Application Security Testing
Evaluation of iOS/Android apps that handle or influence cardholder data flows—secure local storage, transport security, reverse‑engineering resistance, jailbreak/root checks, and secure API usage.
API Security Testing
Targeted testing of payment APIs and service integrations—authentication/authorisation (including object‑level access), input validation, rate limiting, error handling, and secrets management.
Wireless (Wi‑Fi) Security Testing
Assessment of corporate and guest networks, encryption standards, rogue AP detection, segmentation, and credential hygiene to prevent Wi‑Fi as an entry route into the CDE.
Cloud Platform Security Assessment
Inspection of cloud‑hosted components that are in‑scope or connected to the CDE—identity and access management, network security groups, storage permissions, key management, encryption, logging, and resilient baselines.
Outcome: a holistic picture of how an attacker could reach cardholder data—and a prioritised plan to block them.
Benefits: Tangible Security and Compliance Confidence
Choosing an experienced PCI‑DSS pentest partner delivers benefits that go well beyond passing an audit:
- Peace of Mind, Backed by Evidence
Know—not guess—that your controls resist real‑world attacks. Sleep better with hard proof. - Reduced Breach Risk and Cost
Fix vulnerabilities before adversaries exploit them; avoid fines, downtime, and reputational harm. - Smoother Assessments
Provide assessors with crisp scope definitions, reproducible findings, and remediation tracking—reducing back‑and‑forth and shortening audit cycles. - Stronger Engineering & Operations
Translate findings into secure configurations, better deployment pipelines, improved logging/alerting, and resilient identity controls. - Trust and Credibility
Demonstrate to banks, partners, and customers that your commitment to cardholder data security is operational and ongoing. - Global Coverage, Consistent Quality
We deliver the same rigorous methodology and reporting worldwide, with sensitivity to local regulations and time zones.
Our PCI‑DSS Penetration Testing Methodology
Every PCI environment is unique. We tailor our approach to your CDE architecture and business operations, while keeping a consistent, audit‑friendly structure.
1) Joint Scope Definition
We start by collecting information on your scope to align on areas such as:
- Where cardholder data lives and flows (systems, apps, databases, storage, and integrations)
- CDE boundaries and connected networks
- Segmentation strategy and expected scope reduction
- In‑scope payment applications (including third‑party service providers)
- Cloud footprint (accounts, regions, services) and shared‑responsibility considerations
- Critical change drivers (new payment channels, mergers, architecture updates)
- Rules of engagement (timelines, maintenance windows, data handling, emergency contacts)
Clarity here avoids surprises later and ensures that testing aligns to what you expect to see when reviewing scope and evidence.
2) Test Design Based on Assets in Scope
Once scope is finalised, we design a risk‑based test plan around your actual assets:
- Web Applications
OWASP‑aligned testing with focus on payment logic, session handling, multi‑factor flows, admin areas, and data exposure paths. Includes authenticated/role‑based testing. - Mobile Applications
Review of client‑side storage, certificate pinning, transport security, tamper resistance, and interaction with backend APIs and payment SDKs. - APIs & Integrations
Authentication (OAuth/JWT), authorisation (BOLA/BFLA), schema validation, input sanitisation, rate limiting, secrets handling, and verbose error control. - Wi‑Fi
Encryption standards, guest segmentation, rogue AP hunting, onboarding paths, and monitoring controls to ensure wireless isn’t a shortcut into the CDE. - Cloud Platforms
IAM scoping and roles, network segmentation (VPCs/VNETs, security groups), storage controls, KMS/keys, logging/monitoring (CloudTrail/Activity Logs), and hardened reference architectures for payment workloads. - External Network
Perimeter enumeration, misconfiguration discovery, exploitability verification, TLS posture, and WAF/CDN effectiveness. - Internal Network
Lateral movement barriers, privilege escalation, legacy protocol exposure, service account hygiene, and directory/IdP resilience.
Our approach blends manual expert techniques with industry‑leading tooling for depth, coverage, and repeatability.
3) Controlled Execution (Minimal Disruption, Maximum Signal)
We schedule testing windows to align with your operations, provide real‑time communication for critical findings, and—where desired—coordinate with your SOC to validate detection and response. We respect data minimisation, chain‑of‑custody, and safety controls throughout.
4) Reporting That Makes Audits Easier—and Fixes Faster
You receive audit‑ready deliverables:
- Executive Summary — business impact, themed risks, and prioritised actions
- Technical Report — reproducible steps, evidence, affected assets, exploit chains
- Risk Ratings — aligned with likelihood/impact and your internal scheme
- PCI‑DSS Mapping — how findings relate to relevant requirements and expected test coverage
- Clear Remediation Guidance — practical fixes, with “quick wins” and strategic hardening
- Retesting/Validation — confirmation evidence for closed items
We can also provide a segmentation testing attestation to support scope‑reduction claims.
5) Closing the Loop: Remediation & Continuous Improvement
Pentesting only delivers value if issues get fixed. We can additionally support remediation workshops, verify fixes through targeted retesting, and integrate results into your vulnerability management cadence—so improvements are measurable and durable.
What Sets Our PCI‑DSS Pentest Apart
- Experience
Years of delivering PCI assessments and pentests across retail, e‑commerce, fintech, hospitality, and payments processors—on‑prem, hybrid, and cloud‑native CDEs. - Expertise
Senior consultants with deep pentesting, application, cloud, and network skills (OSCP, CREST, eWPTXv2) and proven track records with complex, scoped environments and third‑party service providers. - Authoritativeness
Methodologies and reports that stand up to assessor scrutiny: traceable scope, clear evidence, reproducible results, and remediation mapping that aligns to PCI expectations. - Trustworthiness
Transparent communication, safe handling of sensitive data, and a collaborative style that keeps your teams informed without disruption.
Our goal is not just to help you pass—it’s to help you protect. We bring the rigor of compliance and the creativity of real‑world offensive testing to every engagement.
Engagement Flow (What to Expect)
- Discovery & Scope
CDE mapping, data flows, segmentation, asset inventory, business priorities. - Proposal & Plan
Tailored methodology, schedule, rules of engagement, and evidence plan. - Execution
External, internal, application/API, wireless, and cloud testing; segmentation verification; coordinated check‑ins. - Reporting & Readout
Executive and technical reports, findings walkthroughs, and remediation planning. - Retesting & Attestation
Validate fixes and provide evidence to support assessor review and scope claims. - Continuous Improvement
Feed lessons into secure engineering standards, monitoring use cases, and vulnerability management.
Global Service, Consistent Quality
Whether you’re a regional merchant or a multi‑national payments platform, we deliver PCI‑DSS pentesting worldwide with consistent methodology, clear communication, and time‑zone friendly coordination. If your CDE spans multiple regions or cloud providers, we adapt seamlessly—so you get one cohesive, audit‑ready evidence set.
Sample Deliverables (You’ll Receive)
- Executive summary and risk‑theme analysis
- Technical findings with evidence and exploit paths
- Segmentation test results and scoping confirmation
- Prioritised remediation plan (quick wins vs. strategic changes)
- Retest results documenting closure
- (Optional) Attestation letter for segmentation verification
Turn PCI‑DSS From Obligation to Advantage
Don’t wait for an incident—or a difficult audit—to expose gaps.
Gain the confidence that comes from expert, risk‑driven testing, audit‑ready reporting, and practical remediation support.