Session Token

A Session Token is an encrypted credential generated by a web application after a user logs in, stored in the browser's Cookie, used to verify the user's identity without requiring repeated password entry.

Holding a Session Token allows access to the corresponding service as the user without entering an account name or password.

The attack was a session hijacking attack (Session Grabber), in which the attacker bypassed password verification and directly took over accounts by stealing browser session cookies.

When the SSO链路 (SSO chain) is interrupted, users who already hold a valid session token are often unaffected, but all new login requests fail.

A session token is a temporary credential issued by the server after a user successfully logs in, usually stored on the client as a Cookie or JWT, with an expiration period after which re-authentication is required.

Providing a complete Session token to a third-party website means that during the token's validity period, the other party theoretically possesses nearly the same account access rights as the account owner.

After using a third-party top-up channel, it is recommended to promptly change your password and log out of all devices to cut off the third party's access to the account.

Within its validity period, a Session token fully replaces the password function, and any party holding the token can initiate requests as the user, including viewing conversation history and modifying account settings.

Anyone holding a valid Session Token can call OpenAI's API, read conversation history, modify account settings, and complete subscription changes.

Changing the password does not necessarily immediately invalidate already-issued Tokens; this depends on the platform's specific implementation.

The core step in the top-up process is for the user to log in to ChatGPT, visit a specific link to obtain a Session Token, and then copy and paste it into the top-up platform.

The Session Token is a credential for the login state; once the platform obtains it, it can operate the account as the user to complete plan activation.

OpenAI's Session Token is typically presented in JWT format, containing fields such as user ID, issuance time, and expiration time, and is signed with a server-side private key.

The account information code submitted by users is typically the ChatGPT login token (Session Token), whose permissions are equivalent to direct account access, posing risks of conversation history and bound information leakage.

Common Token theft techniques include directing users to execute JavaScript code in the browser console to read login credentials from document.cookie or localStorage and send them to the attacker's server.

Third-party top-up services require users to paste code and obtain GPT account information, which in essence is very likely reading browser login credentials and hijacking the account.

OpenAI's Session Tokens typically have a long validity period, and once leaked, attackers can continuously control the account for an extended time.

After a user logs into ChatGPT, the browser stores locally a session token issued by OpenAI, which is subsequently carried with every request to identify the user's identity.

OpenAI login session tokens are typically valid for several days or even longer, and even if a user changes their password, they must actively log out of all devices to invalidate the old tokens.

Any operation that requires users to copy authorization codes or sessions to a third party should be regarded as a high-risk behavior.