Testing JWT Token Security When to Use - During authorized penetration tests when the application uses JWT for authentication or authorization - When assessing API security where JWTs are passed as Bearer tokens or in cookies - For evaluating SSO implementations that use JWT/JWS/JWE tokens - When testing OAuth 2.0 or OpenID Connect flows that issue JWTs - During security audits of microservice architectures using JWT for inter-service authentication Prerequisites - Authorization : Written penetration testing agreement for the target - jwt tool : JWT attack toolkit ( or ) - Burp Suite Professi…