Stolen JWTs
Explore the security challenges posed by stolen JSON Web Tokens, including exposure of sensitive data and misuse for unauthorized access. Learn best practices for storing JWTs safely using cookies or web storage and discover strategies like token blacklisting to invalidate compromised tokens and protect your web applications.
So far, we have discussed how JWTs are a secure way of exchanging information authentication.
Although JWT is a robust mechanism, it is still prone to attacks. In this lesson, we will discuss what happens if a JWT is stolen. We will also discuss how a hacker can make changes in a token and mislead us in believing that it is a valid token.
What would happen if JWT is stolen
If a hacker somehow gets access to our JWT, then there are two issues that we face:
1. Hacker can view sensitive information available in the token
As we discussed earlier, a JWT string is just base64 encoding of the header, payload, and signature. If a hacker gets access to the token, then they can decode it and see ...