What defines a security token?

A security token is a physical or digital device that confirms the identity of a user in the context of digital communication and systems access. These tokens are used as part of a two-factor or multi-factor authentication process, where they enhance security by requiring something the user possesses, usually in addition to something they know, such as a password.

By utilizing a security token, organizations can ensure that even if a password is compromised, unauthorized users cannot gain access without having the token as well. This makes security tokens a critical component in protecting sensitive information and ensuring that only authorized individuals can access systems and data.

In contrast, the other options provided do not accurately describe a security token. Programs that scan for malware focus on detecting and removing malicious software. Methods used for manual authentication typically involve user passwords or physical IDs but do not include the essential functionality of a security token. Lastly, systems that analyze traffic patterns are related to network monitoring and security but do not involve authenticating users based on a token system.