30/05/2026
The “Session Cookie” Hijack: Why MFA Can’t Always Save You
MFA is a strong front-door lock. But it’s not the only thing that decides whether someone can get in. After you sign in, your browser keeps you logged in using a session token (often stored as a cookie). It’s the digital version of a wristband at an event: once you’ve been checked, the wristband proves you belong there. If an attacker steals that wristband, they may not need to beat your MFA prompt at all....
MFA is a strong front-door lock. But it’s not the only thing that decides whether someone can get in. After you sign in, your browser keeps you logged in using a session token (often stored as a cookie). It’s the digital version of a wristband at an event: once you’ve been checked, the wristba...