Is it safe to store auth token in local storage?

Is it safe to store auth token in local storage?

Local storage is vulnerable because it’s easily accessible using JavaScript and an attacker can retrieve your access token and use it later. However, while httpOnly cookies are not accessible using JavaScript, this doesn’t mean that by using cookies, you are safe from XSS attacks involving your access token.

How do you store tokens safely?

Browser in-memory scenarios Auth0 recommends storing tokens in browser memory as the most secure option. Using Web Workers to handle the transmission and storage of tokens is the best way to protect the tokens, as Web Workers run in a separate global scope than the rest of the application.

Where are token stored?

Server verifies the credentials are correct and returns a signed token. This token is stored client-side, most commonly in local storage – but can be stored in session storage or a cookie as well.

What is the best way to store token in browser?

A JWT needs to be stored in a safe place inside the user’s browser. If you store it inside localStorage, it’s accessible by any script inside your page. This is as bad as it sounds; an XSS attack could give an external attacker access to the token.

How do I reuse oauth access token?

Yes, the token is supposed to be used as many times as you need within the given expiry time (google sets it to 1 hour). After it has expired, use the refresh token to get another access token and use it as many times as you need. Keep repeating the process.

Why you should not use local storage?

If an attacker can run JavaScript on your website, they can retrieve all the data you’ve stored in local storage and send it off to their own domain. This means anything sensitive you’ve got in local storage (like a user’s session data) can be compromised.

Is it good to use local storage?

Local storage provides at least 5MB of data storage across all major web browsers, which is a heck of a lot more than the 4KB (maximum size) that you can store in a cookie. This makes local storage particularly useful if you want to cache some application data in the browser for later usage.

Is it safe to store auth token in localStorage?

Getting right to the point: storing a token in LocalStorage is insecure. It’s getting more and more common to use token based authentication, specially on Single Page Applications (SPA) that need to communicate with an API. That is a good thing, and I really like the idea of JWT tokens.

Which is the best place to save auth token?

In fact, cookies are still the best and secure place to save the auth token for a webapp. You can mark it as httponly, which means that javascript code can’t access it.

How to exchange authentication code for access token?

The token request, which exchanges the authentication code for an access token, is done by the web application server, and the web application server should authenticate itself with the authorization server (e.g., using a shared client_secret ).

Where is the access token stored in OAuth?

The client, in OAuth terminology, is the component that makes requests to the resource server, in your case, the client is the server of a web application (NOT the browser). Therefore, the access token should be stored on the web application server only.