PCI DSS 5.2.1: Deploy Anti-Malware on All Applicable Components
Anti-malware protection is a foundational defense against payment card data breaches. PCI DSS 5.2.1 requires deploying anti-malware solutions across all system components that face risk—a critical control that auditors scrutinize heavily. Understanding which systems qualify and how to maintain continuous protection is essential for every PCI-compliant organization.
What this means
This control mandates that your organization deploy and maintain anti-malware software on all system components that are susceptible to malware threats. System components include servers, workstations, point-of-sale terminals, and network appliances. The key phrase 'except those identified as not at risk' means you must document and justify any systems excluded from anti-malware protection, proving they cannot be exploited or do not interact with cardholder data environments.
How to comply
- 1.Inventory all system components in your cardholder data environment (CDE) and connected networks
- 2.Classify each component by risk level and malware susceptibility (servers, endpoints, embedded systems, etc.)
- 3.Select and deploy anti-malware solutions appropriate for each component type
- 4.Document systems excluded from anti-malware protection with risk justifications
- 5.Configure real-time scanning and scheduled full scans on all protected systems
- 6.Enable logging and alerting for malware detection events
- 7.Establish a process to update anti-malware signatures and engine software regularly
- 8.Monitor anti-malware status dashboards to verify active protection across all systems
- 9.Conduct quarterly reviews of anti-malware coverage to identify gaps or new system additions
Evidence auditors look for
- Anti-malware deployment policy specifying covered systems and exclusion criteria
- System inventory with anti-malware status and deployment dates
- Risk assessment documents justifying exclusion of specific systems
- Antivirus console dashboard showing active protection on all deployed endpoints
- Anti-malware update logs with signature and engine version histories
- Alert and detection reports demonstrating real-time malware scanning activity
- Configuration screenshots showing scheduled scans and alert thresholds
- Quarterly audit reports confirming anti-malware coverage completeness
Frequently asked questions
When will FAQs be available?
The FAQ for this control is currently being prepared.
GRCWatch automatically discovers all systems in your network, maps anti-malware deployment status in real time, and flags coverage gaps—eliminating manual inventory work and ensuring continuous compliance with PCI DSS 5.2.1.
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