Secure JWT Authentication: Refresh Token Rotation and HttpOnly Cookies 24 Mar 2026 Post a Comment Storing JSON Web Tokens (JWT) in localStorage is a common architectural mistake that leaves applications vulnerable to Cross-Site Scripting (XSS) a… Authentication Best PracticesCSRF ProtectionenHttpOnly CookiesJWT SecurityOAuth 2.0Refresh Token RotationToken TheftWeb SecurityXSS Prevention