In this post, we’ll pull back the curtain on how a malicious (or poorly designed) Chrome extension can function as a keylogger—and more importantly, how to protect yourself.
Unlike traditional software keyloggers that hook into the operating system, extension-based keyloggers operate entirely within the browser's ecosystem. They typically leverage two core components of the Chrome extension architecture: keylogger chrome extension work
: Beyond simple keystrokes, some extensions use "form grabbers" to intercept entire blocks of data when you click "Submit," often capturing information in plaintext even if the site uses SSL encryption. In this post, we’ll pull back the curtain
A keylogger Chrome extension works by injecting malicious JavaScript code into every webpage you visit, allowing it to capture sensitive data like passwords and credit card numbers as you type them. How They Work A keylogger Chrome extension works by injecting malicious
API or by embedding data in image requests to avoid detection. 2. Common Features & Capabilities A Study on Malicious Browser Extensions in 2025 - arXiv