Final answer:
The statement is true. Throughout the OPSEC process, each step may need to be revisited at any time to ensure the effectiveness of the security measures.
Step-by-step explanation:
The statement, "Any step in the OPSEC process may need to be revisited at any time," is true.
OPSEC, which stands for Operational Security, is a process used to identify and protect sensitive information from being exploited by adversaries.
It involves a series of steps, such as identifying critical information, analyzing threats and vulnerabilities, and implementing countermeasures.
Throughout the OPSEC process, it is important to regularly reassess and revisit each step to ensure the effectiveness of the security measures. This is because threats and vulnerabilities can change over time, requiring adjustments and updates in the countermeasures.