What is a recommended practice to enhance security when using a web application?

The recommended practice to enhance security when using a web application is the implementation of two-factor authentication. This security measure adds an additional layer of protection beyond just a username and password. With two-factor authentication, users are required to provide two different types of information to verify their identity, typically something they know (like their password) and something they have (like a mobile device or a hardware token). This makes it significantly more difficult for unauthorized users to gain access to an account, even if they know the password.

Two-factor authentication helps mitigate the risk of password-related attacks, such as phishing or brute force attempts, by ensuring that even if a password is compromised, an additional verification step is needed to access the account. This practice enhances overall security and is widely recommended across various industries for safeguarding sensitive information and maintaining the integrity of user accounts.

In contrast, options like frequent personal password changes and the use of weak passwords do not address security effectively. Frequent changes can lead to user fatigue and poor password choices, while weak passwords increase vulnerability to attacks. Additionally, sharing access among users compromises individual accountability and security. Thus, two-factor authentication stands out as a superior method for strengthening web application security.