PCI DSS 6.4.3 Compliance

PCI DSS v4.0.1 Requirement 6.4.3 mandates that organizations accepting payment cards maintain an inventory of trusted scripts and implement procedures to validate the necessity of each script on payment pages.

Firstoken Monitor's Resources and Script Inventory helps you comply specifically with:

• Automated inventory maintenance of all JavaScript and CSS resources (internal and external)

• Weekly scanning schedule to detect new or modified scripts and stylesheets

• Incident generation for complete tracking of resource changes

• Authorization workflow requiring documented justification for each resource

• Pre-authorization detection from Content-Security-Policy headers

• Audit trail documenting all authorization decisions and incident responses

Documentation for audits:

1. Complete Inventory: Export of all JavaScript and CSS resources with authorization status

2. Authorization Records: Documented justifications for each approved script or stylesheet

3. Incident History: Complete log of all resource change incidents and resolutions

4. Review Procedures: Evidence of established validation workflows

5. Weekly Scan Reports: Documentation of regular scanning schedule

6. Response Timeline: Records showing timely incident investigation and resolution

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Understanding Requirement 6.4.3

PCI DSS v4.0.1 - Requirement 6.4.3

"An inventory of trusted scripts is maintained, and procedures are implemented to evaluate each script to validate necessity."

This requirement addresses security risks from JavaScript and CSS on payment pages, which can:

• Execute malicious code to access sensitive payment data

• Introduce vulnerabilities through compromised vendors or CDNs

• Enable web skimming attacks (e.g., Magecart)

• Modify page behavior or appearance to facilitate fraud

• Expand attack surface without proper visibility

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How Resources and Script Inventory Meets the Requirement

Automated Inventory: Zero-code implementation with immediate initial scan and weekly monitoring of all JavaScript and CSS resources.

Authorization Procedures: Every resource requires explicit authorization or rejection with documented justification, creating a complete audit trail.

Validation Workflow: Structured process from discovery → incident creation → review → authorization → resolution, ensuring each script is evaluated for necessity.

Pre-Authorization Integration: Reads your Content-Security-Policy headers to identify resources already technically permitted, streamlining the review process.

Incident Tracking: Automatic incident generation for every new or modified resource, providing complete visibility and response tracking.

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Support and Additional Resources

• Technical support: Contact our team for compliance guidance

• Audit preparation: Request compliance documentation templates

• Best practices: Ask for detailed authorization workflow guide

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Summary

With Firstoken Monitor Resources and Script Inventory:

1. You comply with PCI DSS 6.4.3 requirements for script inventory management

2. You maintain complete, automated inventory of JavaScript and CSS resources

3. You receive automatic incident generation for every resource change

4. You document validation of necessity for each script and stylesheet

5. You establish defensible security posture with complete audit trail

6. You reduce technical complexity with zero-code, weekly scanning implementation

Have questions? Our team of experts is ready to help you achieve and maintain PCI DSS 6.4.3 compliance.