What is a security token?

A security token refers specifically to a physical device or software that generates authentication codes. This mechanism is commonly used to enhance security through multi-factor authentication, making it essential for safeguarding sensitive data and systems. Security tokens can take the form of hardware devices, such as key fobs that display a changing numeric code, or software applications that provide similar time-sensitive codes, ensuring that only authorized users can access specific resources.

This approach reduces the risk of unauthorized access, as having just a password or a username is not sufficient. The use of security tokens can prevent various types of cyber threats by ensuring that even if a password is compromised, an attacker would also need the token to successfully authenticate. Such tokens are integral in the landscape of cybersecurity, particularly within environments that require strict access controls, such as those involving sensitive government or military operations.