Browser Extension Hijacking: The Invisible Supply Chain Attack
Educational Purpose Only. This article and Lab 3 are strictly for educational purposes. Code examples demonstrate attack techniques to help security professionals understand and defend against them. Never use these techniques on systems you do not own. The Problem with Trusting Your Browser E-skimming attacks usually require compromising a specific website — modifying its JavaScript, injecting a skimmer into its checkout flow. That targets one merchant at a time. Browser extension hijacking breaks that constraint. A compromised extension runs across every website the victim visits — not just one merchant, but every bank, every checkout, every password field, every session cookie. One compromised extension developer account can silently deliver malicious code to millions of users in a single auto-update. ...