ISA/IECISA/IEC 62443IEC 62443: System & Component Security RequirementsEASYFree question
A control system logs security events but the clocks on its devices drift independently, making event correlation unreliable during an investigation. Adding a trusted time source to synchronize timestamps most directly strengthens which foundational requirement?
- A.FR 6 Timely Response to Events
- B.FR 3 System Integrity
- C.FR 4 Data Confidentiality
- D.FR 1 Identification and Authentication Control
Why A is correct
Reliable timestamps and time synchronization underpin auditing and event correlation, which are part of FR 6 (Timely Response to Events). Without synchronized time, the ability to reconstruct and respond to security events is severely degraded.
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