CMMC 1.0 Practice IA.2.079 Requirement:

Prohibit password reuse for a specified number of generations.

CMMC 1.0 IA.2.079 Requirement Explanation:

The reuse of passwords can greatly diminish the effectiveness of passwords.

Example CMMC 1.0 IA.2.079 Implementation:

Configure your user accounts not to accept passwords the reuse of passwords after a specified number of generations. For Windows systems this can be accomplished using group policy. Restricting the reuse of passwords for five generations is a common policy.

CMMC 1.0 IA.2.079 Scenario(s):

- Scenario 1:

John needs to set a new password for his account. He enters a password that he used earlier in the year. Because of his organization's password reuse policy he receives an error message and is forced to come up with a new password.

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