Which action must be taken when implementing password protection?

Strong passwords are a critical security measure. Including special characters (like !, @, ) and maximizing password length significantly increases complexity, making them much harder for attackers to guess or crack. This aligns with best practices for robust password protection. Using fewer than eight characters, even with complexity, is generally considered weak and easily compromised. Sharing passwords, even with senior management, introduces a significant security risk by increasing the number of people who know the credentials. Storing passwords on a mobile device with single-factor authentication is highly insecure, as the device could be lost or compromised, exposing all stored credentials.