OT Time Synchronization Security: When the Clock Lies

Manipulated time can make operational alarms and event sequences unreliable. Explore time synchronization as a security dependency in critical OT and railway systems. The episode examines how a compromised clock affects investigation, control decisions and confidence in the evidence. Related CUP episodes: Railway Patch Management: When an Update Stops the Network FRMCS Security: Why a Mobile Network SLA Is Not a Safety Case Legacy Railway Cybersecurity: Why Policy Is Not Enough Railway API Security: When Authenticated Data Contradicts Reality Legacy Railway Security: Patching and Validation Constraints Railway OT Segmentation: When a Network Change Opens the Boundary Railway Cybersecurity: Why Attack Detection Does Not Prove Safety Railway Cybersecurity: Service Risk Beyond the SIL Boundary Legacy Railway OT: Reducing Risk When You Cannot Harden the Asset Railway OT Segmentation: Protecting the Certified Core