Ensure PCI DSS Compliance

PCI DSS Compliance Expert organizes payment-card security work around the twelve PCI DSS requirements and six control objectives. It covers secure networks and configurations, stored and transmitted cardholder data, vulnerability management, access controls, network monitoring and testing, and organizational security policies.

Cardholder Data Environment (CDE) scoping is a central part of the workflow. The scoping framework distinguishes systems that store, process, or transmit cardholder or sensitive authentication data; security services and systems that can affect the environment; connected systems; and systems separated through validated segmentation.

Implementation guidance includes network security rules, segmentation checks, data protection examples, role-based access, authentication, logging, and vulnerability management. It connects individual control areas with practical configuration and documentation tasks without reducing compliance to a single installation step.

Use this skill when structuring a payment security implementation, reviewing the scope of an environment, or preparing control and validation work. Guidance is intended to take account of merchant level, business model, service-provider responsibilities, and the technology stack.

The approach treats compliance as ongoing work. Security controls require continuing monitoring and maintenance, and changes need a security impact assessment. Common pitfalls include scope expansion from weak segmentation, inadequate key storage and rotation, insufficient vendor due diligence, incomplete documentation, and poor remediation tracking.

The included configurations and assessment categories support planning. They do not represent an audit result for the environment in which the skill is used.

Inputs include the payment environment, connected networks, data flows, user roles, system criticality, data exposure, and assessment context. Outputs include scope classifications, control implementation examples, access matrices, audit-log requirements, testing schedules, and remediation priorities.

The RBAC example separates database administration, application processing, and security administration. It records cardholder-data access, permitted systems, and restrictions such as masked displays, logged sessions, and limited export capabilities. MFA examples illustrate token verification and role-based enforcement.

Audit logging covers user identity, event type, date and time, outcome, origin, and affected resource. Event categories include cardholder-data access, privileged actions, audit-trail access, authentication attempts, logging changes, and system-object creation or deletion.

The validation overview distinguishes SAQ A, A-EP, B, B-IP, C, C-VT, and D by payment arrangement. Risk-based remediation examples combine vulnerability severity, data exposure, and system criticality.

Examples use iptables for network restrictions, Nginx for TLS settings, Python for data handling and MFA, and shell commands for log review and integrity checks. The TLS example includes:

    ssl_protocols TLSv1.2 TLSv1.3;

Vulnerability planning covers internal scanning, external ASV scans, penetration testing, and segmentation testing, alongside remediation tracking.