What is a key requirement for password management in secure systems?

Regularly updating passwords is a fundamental component of password management in secure systems. This practice is vital because it helps to reduce the risk of unauthorized access. Over time, passwords can be compromised through various means, such as phishing attacks, data breaches, or social engineering. By requiring users to update their passwords periodically, organizations can minimize the window of opportunity for an attacker to exploit a stolen or leaked password.

Additionally, regular updates encourage users to adopt stronger password practices, such as creating unique passwords for different accounts and using a combination of letters, numbers, and symbols. This increases the overall security posture of the system.

In contrast, longer passwords, while often more secure, can be challenging for users to remember, which might lead them to write them down or use insecure methods for storing them. Limiting users' access is important for minimizing potential damage from compromised accounts, but it does not directly address password strength and management. Lastly, using only uppercase letters is not considered a best practice, as it reduces the complexity of passwords and makes them more susceptible to guessing or brute force attacks.