PCI DSS 6.4.1: Continuous Web Application Threat Management
Cyber threats against web applications evolve constantly, and PCI DSS 6.4.1 mandates that organizations address these threats on an ongoing basis. For any business handling payment card data, a reactive security posture isn't enough—you need continuous vulnerability detection and remediation. This control ensures your public-facing applications remain protected against emerging attack vectors.
What this means
PCI DSS 6.4.1 requires organizations to maintain an active, continuous program for identifying and addressing threats to public-facing web applications. Rather than relying on periodic assessments alone, this control demands ongoing monitoring, vulnerability scanning, and threat intelligence integration. Your organization must stay current with newly discovered vulnerabilities, apply security patches promptly, and adapt defenses as attack methods evolve.
How to comply
- 1.Implement automated vulnerability scanning tools that run continuously against all public-facing web applications
- 2.Establish a process to monitor security advisories and threat intelligence feeds relevant to your application stack
- 3.Create a vulnerability triage and remediation workflow with defined SLAs based on severity ratings
- 4.Conduct regular security testing including dynamic application security testing (DAST) and web application penetration testing
- 5.Maintain an inventory of all public-facing applications and their dependencies to ensure complete coverage
- 6.Document and review all identified vulnerabilities along with remediation actions taken
- 7.Train development and operations teams on secure coding practices and current threat landscape
Evidence auditors look for
- Vulnerability scan reports from automated tools showing continuous execution dates and remediated findings
- Documentation of security patch deployment logs for web applications and underlying infrastructure
- Threat intelligence subscription records or security bulletin monitoring logs
- Penetration test reports conducted within the compliance period with evidence of vulnerability fixes
- Change management records showing deployment of security updates
- Incident response logs documenting detection and remediation of web application threats
- Security testing schedules showing regular DAST and code review activities
Frequently asked questions
When will FAQs be available?
The FAQ for this control is currently being prepared.
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