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Nov 30, 2025 · Information Security

Why Storing JWT in localStorage Is a Security Nightmare and Safer Alternatives

Storing JWT tokens in localStorage, once a common practice for front‑end authentication, now poses severe XSS risks; this article explains the vulnerabilities, compares HttpOnly cookies, BFF with cookies, and Service Worker‑based solutions, and recommends safer strategies for modern web applications.

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Why Storing JWT in localStorage Is a Security Nightmare and Safer Alternatives