Stop Storing Sensitive Data in Local Storage: Do This Instead!

Storing sensitive data like access tokens in local storage is a big no-no! Here’s why:
1️⃣ Local storage is vulnerable to XSS attacks.
2️⃣ Tokens in local storage can be easily accessed by JavaScript, increasing the risk of compromise.

🔒 Th…


This content originally appeared on DEV Community and was authored by Elvis Sautet

Storing sensitive data like access tokens in local storage is a big no-no! Here's why:

1️⃣ Local storage is vulnerable to XSS attacks.

2️⃣ Tokens in local storage can be easily accessed by JavaScript, increasing the risk of compromise.

🔒 The Solution?

Store all tokens and sensitive data in HTTP-only cookies. Here's why it's better:

  • Cookies are secure and inaccessible to JavaScript.
  • They support automatic handling of token refreshing.
  • Signed cookies ensure data integrity.

What I’m Building 🚀

I’m working on creating a secure Node.js + React app that:

✅ Never store sensitive data in local storage.

✅ Is scalable for big systems.

✅ Includes an easy-to-follow tutorial with a GitHub repo link!

💡 Want to learn how to build this? Subscribe now!

🌐 Connect With Me

Let’s connect and build something great together! 🚀


This content originally appeared on DEV Community and was authored by Elvis Sautet


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Elvis Sautet | Sciencx (2025-01-13T06:00:03+00:00) Stop Storing Sensitive Data in Local Storage: Do This Instead!. Retrieved from https://www.scien.cx/2025/01/13/stop-storing-sensitive-data-in-local-storage-do-this-instead/

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" » Stop Storing Sensitive Data in Local Storage: Do This Instead!." Elvis Sautet | Sciencx - Monday January 13, 2025, https://www.scien.cx/2025/01/13/stop-storing-sensitive-data-in-local-storage-do-this-instead/
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IEEE
" » Stop Storing Sensitive Data in Local Storage: Do This Instead!." Elvis Sautet | Sciencx [Online]. Available: https://www.scien.cx/2025/01/13/stop-storing-sensitive-data-in-local-storage-do-this-instead/. [Accessed: ]
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