Session hijacking bypasses authentication entirely

Attackers use stolen session tokens to access accounts without credentials or MFA. The attack happens after login, inside the browser.

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How the session hijacking works.

Session hijacking allows attackers to access accounts without going through the login process altogether. Instead of stealing credentials, they steal the session that was created after authentication.

1. A user logs into an application and receives a session token.
2. The session token is stored in the browser and used to maintain access.
3. The attacker obtains that token through phishing, malware, or a malicious extension.
4. The token is replayed from another browser or device.
5. The application treats the attacker as an authenticated user.

Because the session is already trusted, no password or MFA challenge is required. The attacker inherits the user’s access immediately. In one incident, attackers used stolen session tokens to access customer environments, impacting 134 organizations and exposing data from over 18,000 users.

Why most security tools miss session hijacking

Session hijacking doesn’t involve a login event. From the application’s perspective, the session is already authenticated.

Most logs show normal activity. Requests are valid, authentication has already been completed, and access patterns may look legitimate. The only difference is where the session is being used, something many tools don’t track effectively.

Importantly, the moment when the session is stolen happens inside the browser. Once the token leaves the browser, the attacker can operate freely.

Detect and stop session hijacking with Push

Push operates inside the browser, where sessions are created and used. It provides visibility into how sessions originate and where they are used.

Every session created in a Push-protected browser is tagged. If that session is replayed from a different browser or environment, Push detects the mismatch and alerts immediately.

Push can also identify behaviors associated with session theft and reuse, giving security teams early visibility into account compromise even when no login event occurs.