Session Hijacking Renders MFA Useless — Here's How Attackers Exploit It

Cybersecurity experts warn that account takeover attacks are increasingly bypassing authentication entirely by targeting active sessions after login. Once a user completes password and MFA verification, attackers can steal the resulting session token and impersonate them without ever touching their credentials. The compromised session grants full access to sensitive actions — including fund transfers, data exports, and admin changes — because the application treats all requests from that session as legitimate. Most security monitoring tools focus on login-stage threats like credential stuffing and brute-force attempts, leaving post-authentication activity largely unguarded. Modern security platforms are now advocating for continuous session monitoring that tracks behavioral signals such as device changes, unusual navigation, and high-risk transactions to detect threats already inside an account.