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PCI-DSS v4.0

PCI-DSS v4.0 Compliance with CtrlLayer

PCI-DSS v4.0 introduced 64 new requirements with a March 2025 deadline for full enforcement. CtrlLayer's endpoint security platform addresses critical requirements across network security, access control, malware protection, logging, and security policy management — protecting cardholder data environments from the endpoint up.

PCI-DSS v4.0 — All 12 Principal Requirements Addressed
Requirement 1

Install and Maintain Network Security Controls

Network security controls (NSCs) such as firewalls restrict traffic between trusted and untrusted networks.

1.2 / 1.3

Network Security Configuration

  • Network Connection Monitoring: CtrlLayer's endpoint agent monitors all inbound and outbound network connections from each managed device, providing visibility into traffic patterns within the cardholder data environment (CDE).
  • Unauthorized Connection Detection: Automated detection of connections to unknown or suspicious destinations. Alerts on unexpected network traffic from CDE endpoints.
  • Connection Inventory: Complete history of network connections per device, enabling reconstruction of data flows for PCI assessments.
1.4

Network Connections Between Trusted and Untrusted Networks

  • Endpoint Firewall Validation: Agent verifies that local firewall rules are active and correctly configured on each endpoint within the CDE.
  • Remote Access Monitoring: VPN-less agent architecture means every connection is authenticated and monitored regardless of network location — critical for PCI-DSS v4.0's expanded scope to remote workers.
Requirement 5

Protect All Systems and Networks from Malicious Software

Malicious software (malware) introduced via email, internet, mobile devices, and removable media can exploit system vulnerabilities.

5.2

Malicious Software Prevention

  • Threat Detection: Security Master agent performs continuous threat scoring and anomaly detection across managed endpoints. Integrates with 48,000+ threat intelligence indicators.
  • Application Control: Software library management restricts which applications can execute on CDE endpoints. Unapproved software is flagged and can be blocked.
  • USB Malware Vector: USB storage control blocks or restricts removable media — a common malware introduction vector in payment environments.
5.3

Anti-Malware Mechanisms

  • Continuous Monitoring: Agent runs as a persistent background service with anti-tamper protections, ensuring continuous security monitoring.
  • Automated Response: Configurable automated actions respond to detected threats including device isolation and privilege revocation.
  • Audit Trail: All threat detection events are logged with hash-chain integrity verification for forensic analysis.
Requirement 7

Restrict Access to System Components and Cardholder Data by Business Need to Know

Unauthorized access to system components and cardholder data should be restricted to only those individuals whose job requires such access.

7.2

Access Control Model

  • Role-Based Access Control: RBAC+ABAC policy engine ensures privilege elevation is restricted by role, device, application, time, and contextual factors.
  • Least Privilege: App-scoped elevation grants minimum necessary privilege for specific applications only. Users never receive full administrator access.
  • Just-In-Time Access: Elevation grants expire automatically after the configured time window. No standing privileges remain after task completion.
  • Default Deny: All elevation requests are denied by default unless explicitly authorized by policy or approved by an administrator.
7.3

Access Control System Management

  • Centralized Policy Management: All access policies are managed centrally through the CtrlLayer console. Changes are version-tracked and audited.
  • Regular Access Reviews: Dashboard provides complete visibility into who has been granted elevated privileges, when, and for what purpose — enabling efficient quarterly access reviews.
Requirement 8

Identify Users and Authenticate Access to System Components

Identifying and authenticating users ensures that all system access can be attributed to known individuals.

8.2 / 8.3

User Identification and Authentication

  • Unique User IDs: Every CtrlLayer user has a unique identifier. No shared or generic accounts are supported. All actions are attributed to individual users.
  • Strong Authentication: JWT-based authentication with configurable session policies. Multi-factor verification available for elevation requests.
  • No Credential Sharing: QR-based tech delegation allows technicians to work on devices without ever receiving user credentials — a fundamental requirement of PCI-DSS Req 8.
  • Authentication Event Logging: Every authentication attempt — successful or failed — is logged with timestamp, source, and device context.
8.6

System and Application Account Management

  • Service Account Governance: Agent authentication uses signed JWT tokens with expiration, preventing indefinite service account access.
  • Privileged Account Monitoring: All administrative actions within the CtrlLayer console are logged and can be reviewed for unauthorized changes.
Requirement 10

Log and Monitor All Access to System Components and Cardholder Data

Logging mechanisms and the ability to track user activities are critical for preventing, detecting, and minimizing the impact of a data compromise.

10.2

Audit Log Implementation

  • Comprehensive Event Logging: CtrlLayer captures all required PCI events: user access, administrative actions, access to audit trails, invalid access attempts, identification mechanism changes, and initialization of audit logs.
  • Hash-Chain Integrity: Every audit log entry includes an integrity hash linked to the previous entry. This tamper-proof chain satisfies PCI-DSS 10.3.4's requirement to protect audit logs from modification.
  • Centralized Collection: All endpoint events are transmitted to the central platform, enabling correlation across the entire CDE.
10.4

Audit Log Review

  • Blue Team Correlation: Automated event correlation engine identifies suspicious patterns including brute force attempts, lateral movement, privilege escalation, and policy bypass.
  • Real-Time Alerting: Configurable alerts for security events. Automated escalation for critical findings. Dashboard provides at-a-glance visibility.
  • Automated Daily Reviews: Blue Team engine performs continuous log review, exceeding PCI's requirement for daily review of security events.
10.5

Audit Log History Retention

  • Log Retention: Configurable retention policies ensure at least 12 months of audit history as required by PCI-DSS, with a minimum of 3 months immediately available for analysis.
  • Tamper Protection: Hash-chain integrity verification ensures retained logs remain unaltered throughout the retention period.
Requirement 12

Support Information Security with Organizational Policies and Programs

An organization's overall information security policy sets the tone for security and informs personnel of their expected duties.

12.3

Risk Assessment and Management

  • Continuous Risk Assessment: Security Master agent provides real-time threat scoring and device posture assessment, supporting the annual risk assessment requirement with continuous data.
  • Compliance Monitoring: Blue Team engine runs automated compliance checks against configured baselines, identifying policy violations and configuration drift.
12.10

Incident Response Plan

  • Incident Detection: Automated detection of security incidents with severity classification and escalation workflows.
  • Forensic Evidence: Hash-chain audit logs provide admissible forensic evidence for incident investigation and response.
  • Containment Actions: Real-time device isolation, privilege revocation, and USB lockdown capabilities support rapid incident containment.
  • Post-Incident Analysis: Complete event timeline reconstruction from tamper-proof logs enables thorough post-incident review.

PCI-DSS v4.0 Coverage Summary

Req 1
Network Security
Network monitoring, connection inventory, firewall validation
Req 5
Malware Protection
Threat detection, application control, USB restriction
Req 7
Access Restriction
RBAC+ABAC, JIT elevation, least privilege, default deny
Req 8
User Authentication
Unique IDs, JWT auth, QR delegation, event logging
Req 10
Log & Monitor
Hash-chain audit, Blue Team correlation, retention
Req 12
Security Policy
Risk assessment, compliance checks, incident response

Protect Cardholder Data from the Endpoint Up

See how CtrlLayer accelerates PCI-DSS v4.0 compliance for your organization.

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