What is a key benefit of enabling two-factor authentication for user accounts?

Enabling two-factor authentication (2FA) for user accounts significantly enhances security by requiring not just a password but also a second form of verification, often a temporary code sent to a mobile device or generated by an authentication app. This additional layer makes it much more challenging for unauthorized users to gain access, even if they have obtained the password.

Since most attacks involve brute-force attempts to steal or guess passwords, having that extra step of verification significantly diminishes the risk of an unauthorized breach. This is especially critical in environments that deal with sensitive information or need to comply with regulatory standards about data protection.

The other options do not align with the security objectives of two-factor authentication. It does not make passwords unnecessary since users still need to enter them as part of the authentication process. Similarly, it does not simplify logging in, as integrating two-step verification typically adds complexity and time to the process. Finally, it certainly does not allow for unlimited attempts; rather, it aims to restrict access and improve security by requiring verification beyond just the password.