Java Architect Essentials

Jul 2, 2025 · Information Security

How to Bulletproof JWTs: Prevent Token Theft, None Attacks, and Brute‑Force

This article examines common JWT vulnerabilities—including token exposure via localStorage, algorithm‑tampering “none” attacks, weak signing keys, and lack of revocation—and presents a robust solution using HTTPS transmission, HttpOnly Secure cookies, SM9 cryptographic signatures, and a Redis‑based blacklist to achieve dramatically improved security.