Which method can help prevent spoofing in cybersecurity?

Two-Factor Authentication (2FA) is a method used to enhance security and protect against spoofing, which is the act of impersonating a legitimate user or device. By requiring two distinct forms of verification before granting access—typically something the user knows (like a password) and something the user has (like a mobile device for receiving a code)—2FA adds an additional layer of security.

This method mitigates the risk of unauthorized access, even if an attacker manages to obtain a user’s password. By necessitating a second form of confirmation that is not easily replicated or stolen—such as a one-time code sent via SMS or an authentication app—2FA makes it significantly harder for an attacker to successfully spoof a user's credentials. Consequently, it effectively reduces the chances of identity theft and unauthorized access to sensitive information or systems, thereby enhancing overall cybersecurity.

In contrast, while other methods listed such as firewall policies, Access Control Lists (ACL), and network segmentation play vital roles in a comprehensive security strategy, they focus on controlling or managing traffic and access within a network rather than specifically addressing the identity verification of users.