How often must the combination on padlocks for classified storage be changed at a minimum?

Changing the combination on padlocks for classified storage is an important security measure to ensure that access to sensitive materials is controlled and monitored effectively. The requirement to change the combination annually serves as a proactive approach to mitigate the risk of unauthorized access. By changing the combination at least once a year, it helps ensure that individuals who may have previously had access to the code no longer have the ability to open the locks after a specific period.

This time frame balances the need for security with practicality, as changing the combination too frequently could lead to operational challenges and increase the chance of human error in communication regarding the new combinations. It is essential to ensure that all personnel who require access are updated with the new combinations promptly.

In contrast, other options suggest more frequent changes or longer intervals. While more frequent changes might seem secure, they could introduce unnecessary complications and lead to convenience issues for authorized personnel. Conversely, a less frequent change, such as annually, presented here, strikes an optimal balance between security and functionality.