What is a security token?

• A. A type of encryption algorithm
• B. A physical or software device for system access
• C. A method for incident reporting
• D. Software that detects malware on a system

Answer: (B)

A security token serves as a physical or software device that authenticates a user's identity and grants access to a system or service. It functions as a key, enhancing security by ensuring that only authorized individuals can access sensitive information or resources.

In a physical form, security tokens may resemble small devices, like key fobs or smart cards, that generate one-time passwords or contain stored data for user identification. On the other hand, software tokens are often found in apps that provide similar authentication capabilities through secure software solutions, further ensuring protection against unauthorized access.

Other choices involve concepts that are related but different from what defines a security token. For instance, while encryption algorithms play a significant role in securing data, they do not directly act as access tools like tokens. Incident reporting methods focus on documenting and addressing security breaches in a separate context. Lastly, malware detection software is specifically designed to identify and eliminate malicious software, which is also distinct from the functionality provided by security tokens.