What is the function of two-step verification?

Two-step verification serves the primary function of requiring two different authentication factors for identity verification. This method enhances security by adding an extra layer to the authentication process. Instead of just relying on a single factor, such as a password, users must provide a second form of verification, which could be something they have (like a smartphone or hardware token) or something they are (like a fingerprint or facial recognition).

This two-factor approach significantly reduces the risk of unauthorized access, even if one factor (e.g., the password) is compromised. It means that an attacker would need to obtain both factors to gain access to a protected account or system, making it much more difficult for them to succeed in breaching security.

The other options, while related to cybersecurity, do not accurately describe the specific function of two-step verification. For example, restricting access to a network or limiting password changes does not inherently involve the layered security that two-step verification provides. Similarly, enhancing the speed of user authentication is not a primary objective; rather, two-step verification may actually take a bit longer due to the additional step required. This method is fundamentally about increasing security and ensuring that users can confidently access their accounts and sensitive information.