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Spring Security 6 & JWT Authentication · Lesson

Secure Token Storage Practices

Understand the best practices for storing JWTs and refresh tokens on the client-side to prevent common attacks.

Why Secure Token Storage Matters

When building secure applications with JWTs, where you store these tokens on the client-side is crucial. Improper storage can expose your users to various security risks.

This lesson explores the best practices for handling JWTs and refresh tokens in client environments like web browsers, ensuring your application remains robust against common attacks.

Client-Side Storage Options

Web browsers offer several ways to store data, each with different security implications for sensitive tokens:

  • LocalStorage: Stores data persistently across browser sessions.
  • SessionStorage: Stores data only for the duration of the browser session.
  • Cookies: Small pieces of data sent by the server and stored by the browser, sent back with subsequent requests.

Choosing the right option is key to token security.

All lessons in this course

  1. Implementing Refresh Tokens
  2. JWT Token Revocation Strategies
  3. Secure Token Storage Practices
  4. Rotating Signing Keys and Key Management
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