JWT Vulnerabilities and Attacks/API Security Project - Part7

JWT (JSON Web Token) is a compact and secure token format used for authentication and authorization in modern APIs and microservice architectures. A JWT contains a set of claims about a user and is cryptographically signed, allowing its authenticity and integrity to be verified. For demonstration purposes, we intentionally created a vulnerable API microservice that checks only the presence of a JWT and the values inside it, but does not verify the token’s integrity. This allowed us to demonstrate a JWT attack in practice by modifying the token’s contents and performing an unauthorized operation. ⚠️ Important: this approach is used strictly for educational purposes. Never implement such logic in a production environment, as it exposes your application to serious security risks. In the next lessons, I will show how to prevent such attacks using FortiWeb WAF, by enforcing JWT signature and integrity validation at the web application protection level. Download: https://drive.google.com/file/d/1iBfXHXkBARlM25QO05EgLCynpyCB6psX/view?usp=sharing #cybersecuritytutorial #cybersecurity #api #devops #developer #backend #microservices #jwt #penetration_testing