Hi @somen8099,
Welcome to the Auth0 Community!
Decoding a JWT token involves verifying the signature and decoding the payload. The signature is generated using a secret key known only to the token issuer. When decoding a JWT token, only the payload is decoded, which contains the actual data and is not encrypted.
However, decoding the payload does not verify the token’s signature. Without the secret key, you cannot verify the token’s authenticity or prevent tampering. Decoding the payload without verifying the signature is not a security risk as long as the signature is verified before using the token.
Note that the JWT token shouldn’t be used for storing sensitive data.