What does two-factor authentication require?

Two-factor authentication (2FA) enhances security by requiring two distinct forms of identification from the user before granting access to an account or system. This method combines something the user knows (like a password) with something the user has (such as a smartphone or security token) or something the user is (like a fingerprint). By using two different types of authentication methods, it significantly reduces the likelihood of unauthorized access, as it is less likely for an attacker to possess both forms of identification.

For example, even if someone manages to steal a password, they still would need the second factor, such as a code sent to the user's mobile device, to gain access. This layered approach is critical in today’s cybersecurity landscape, where threats are constantly evolving and becoming more sophisticated. Hence, the requirement of two forms of identification is integral to enhancing security measures and protecting personal and organizational data effectively.