Which method would enhance user sign-in security in a networked environment?

Employing multi-factor authentication significantly enhances user sign-in security by requiring users to provide multiple forms of verification before they can access accounts or services. This method goes beyond relying solely on a username and password, which can be vulnerable to various forms of attack, such as phishing or brute force.

With multi-factor authentication, users might be required to enter something they know (like a password), something they have (like a smartphone app that generates a time-sensitive code), or something they are (like a fingerprint). This layered approach creates additional barriers for unauthorized access, making it much more difficult for attackers to compromise an account, even if they have stolen someone’s password.

This method is widely regarded as a best practice in securing user accounts because it mitigates the risks associated with single-factor authentication methods, making user access more secure in a networked environment.