
PCI DSS v4.0.1 is a global security standard designed to protect cardholder data and secure payment environments through requirements focused on access control, encryption, vulnerability management, monitoring, and security governance.
Install and Maintain Network Security Controls
Processes and mechanisms for installing and maintaining network security controls are defined and understood.
Network security controls (NSCs) are configured and maintained to protect cardholder data.
Network access to and from the cardholder data environment (CDE) is strictly restricted.
Network connections between trusted and untrusted networks are fully controlled and audited.
Risks to the CDE from computing devices that are able to connect to both untrusted networks and the CDE are mitigated.
Apply Secure Configurations to All System Components
Processes and mechanisms for applying secure configurations are defined and understood.
System components are configured and managed securely.
Wireless environments attached to the CDE are configured and managed securely.
Protect Stored Account Data
Processes and mechanisms for protecting stored account data are defined and understood.
Storage of account data is minimized through formal retention and disposal schedules.
Sensitive authentication data (SAD) is strictly prohibited from storage after transaction authorization.
Access to displays of full Primary Account Number (PAN) is restricted based on explicit business need.
Primary account number (PAN) is secured wherever it is stored.
Cryptographic keys used to protect stored account data are completely secured throughout their lifecycle.
Key management processes and procedures covering all aspects of the key lifecycle are defined and implemented.
Protect Cardholder Data During Transmission
Processes and mechanisms for using strong cryptography during transmission are defined.
PAN is securely transmitted over open, public, or untrusted networks using strong cryptography.
Protect All Systems from Malicious Software
Processes and mechanisms for protecting all systems and networks from malicious software are defined and understood.
Malicious software (malware) is prevented, or detected and addressed on all system components.
Anti-malware mechanisms and processes are active, maintained, and monitored.
Anti-phishing mechanisms protect users against phishing attacks.
Develop and Maintain Secure Systems and Software
Processes and mechanisms for developing and maintaining secure systems and software are defined and understood.
Custom software is developed securely according to recognized software standards (e.g., OWASP).
Security vulnerabilities are actively identified and promptly addressed.
Public-facing web applications are protected against automated and application-layer attacks.
Changes to system components in production are managed securely.
Restrict Access by Business Need to Know
Processes and mechanisms for restricting access are explicitly defined.
Access to system components and data is appropriately defined and assigned based on business need to know.
Access privileges are assigned and managed via a formal approval system.
Identify Users and Authenticate Access
Processes for identifying users and authenticating access are defined.
User accounts are managed securely throughout their entire operational lifecycle.
Strong authentication parameters for all users are established and enforced.
Multi-factor authentication (MFA) is strictly implemented for all access into the CDE.
Multi-factor authentication (MFA) systems are implemented and configured securely.
Use of application and system accounts and associated authentication factors is strictly managed.
Restrict Physical Access to Cardholder Data
Processes for managing physical access to cardholder data are defined.
Physical access controls manage entry into secure facilities and data hubs.
Physical access for all personnel and third-party visitors is properly managed.
All physical media containing cardholder data is securely handled and archived.
Point-of-interaction (POI) devices are physically protected from tampering or substitution.
Log and Monitor All Access
Processes for logging and monitoring all access are defined and understood.
Audit logs are implemented to support the detection of anomalies.
Audit logs are secured against unauthorized modifications or deletion.
Audit logs are reviewed regularly to identify suspicious activity.
Audit log history is retained and readily available for forensic analysis.
Time-synchronization mechanisms ensure consistent timestamps across systems.
Failures of critical security controls are detected and responded to promptly.
Test Security of Systems and Networks
Processes for regularly testing system and network security are defined.
Rogue wireless access points are regularly identified and addressed.
External and internal vulnerabilities are regularly identified and prioritized.
External and internal penetration testing is regularly performed, and exploitable vulnerabilities and security weaknesses are corrected.
Network intrusions and unexpected file changes are continuously monitored.
Unauthorized modifications to HTTP headers and payment page contents are detected and responded to.
Support Information Security with Policies
A comprehensive security policy governs the protection of all assets.
Acceptable use policies for end-user technologies are documented and implemented.
Risks to the cardholder data environment are formally identified, evaluated, and managed through a targeted risk analysis process.
PCI DSS compliance is actively managed and monitored on an ongoing basis throughout the assessment period.
The PCI DSS scope is formally documented, maintained, and validated at least annually and upon significant changes.
Security awareness education is implemented and maintained for all personnel involved with the cardholder data environment.
Personnel with access to the cardholder data environment are subject to background screening before hire to minimize the risk of insider threats.
Risks posed to cardholder data by third-party service providers (TPSPs) are formally identified, assessed, and managed.
Third-party service providers formally acknowledge their responsibility for protecting cardholder data and maintaining PCI DSS compliance for the services they provide.
Suspected and confirmed security incidents that could impact the CDE are responded to immediately.