💳PCI DSS 10.4Rule: PCI-10-4medium

Time Synchronization

Description

Time synchronization must be implemented across all system components to ensure consistent timestamps in audit logs.

⚠️ Risk Impact

Time drift across systems makes log correlation impossible. Forensic investigation requires consistent timestamps across cloud, application, and infrastructure layers.

🔍 How EchelonGraph Detects This

PCI-10-4Automated scanner rule

EchelonGraph's Tier 1 Cloud Scanner automatically checks for this condition across all connected cloud accounts. Violations are flagged as medium-severity findings with remediation guidance.

🔧 Remediation

Use cloud-native NTP. Verify time drift <1 second across all systems. Monitor + alert on drift >5 seconds. Document the time source.

💀 Real-World Attack Scenario

A merchant's investigation of a breach required correlating events across 4 systems. Time drift averaged 7 minutes between systems. Forensic timeline reconstruction took 3× longer than necessary; some causal chains couldn't be established due to ambiguous ordering. The investigation extended 11 days.

💰 Cost of Non-Compliance

Forensic investigation cost increases 3× without time sync (Mandiant M-Trends 2024).

📋 Audit Questions

  • 1.Time-sync source?
  • 2.Drift tolerance?
  • 3.Monitoring for drift?
  • 4.Last drift event?

🎯 MITRE ATT&CK Mapping

T1070 — Indicator Removal on Host

⚡ Common Pitfalls

  • Default NTP not configured on cloud instances
  • No monitoring for time drift
  • Time zones unmanaged (UTC vs local creates confusion)

📈 Business Value

Time sync is foundational to incident forensics + audit.

⏱️ Effort Estimate

Manual

Verify across estate

With EchelonGraph

EchelonGraph monitors NTP configuration + alerts on drift

🔗 Cross-Framework References

SOC2-CC7.1NIST-AU-8

Automate PCI DSS 10.4 compliance

EchelonGraph continuously monitors this control across all your cloud accounts.

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