JWT: JSON Web Token in Cybersecurity
Pronounced 'jot'. Also said letter by letter J-W-T.
JWT stands for JSON Web Token. A JSON Web Token is a compact, URL-safe token format for transmitting claims between two parties. JWTs contain a header, payload, and signature that allow recipients to verify the token's integrity and authenticity.
How JWT Is Used in Cybersecurity
Security engineers issue JWTs for stateless API authentication and session management. Penetration testers check for weak signing algorithms (like "none"), missing expiration claims, and secret key brute-forcing. Architects decide between signed (JWS) and encrypted (JWE) tokens based on sensitivity.
Cybersecurity Roles That Work with JWT
Related Cybersecurity Acronyms
Frequently asked questions
What does JWT stand for?
JWT stands for JSON Web Token. A JSON Web Token is a compact, URL-safe token format for transmitting claims between two parties. JWTs contain a header, payload, and signature that allow recipients to verify the token's integrity and authenticity.
What is JWT used for in cybersecurity?
Security engineers issue JWTs for stateless API authentication and session management. Penetration testers check for weak signing algorithms (like "none"), missing expiration claims, and secret key brute-forcing. Architects decide between signed (JWS) and encrypted (JWE) tokens based on sensitivity.
Definitions are original explanations written for career development purposes. For authoritative technical definitions, refer to NIST, ISO, or the relevant standards body.