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PCI Requirement 10.4.2 – Time Data is Protected

PCI Requirement 10.4.2 requires that through time-synchronization technology, time data is protected. Organizations must implement controls to protect time data from unauthorized access or modification. Why? Malicious attackers may seek to modify time data to hide what actions they’ve taken over a period of time.


PCI Requirement 10.4 – Using Time-Synchronization Technology, Synchronize All Critical System Clocks and Times

Remember how PCI Requirement 10.3 requires that date and time of events are captured in log entries? PCI Requirement 10.4 dives into time management and what is required of that date and time. It requires that organizations should use time-synchronization technology to synchronize all critical system clocks and times and ensure that the following is implemented for acquiring, distributing, and storing time: