Keylogging (or keystroke logging) is the practice of covertly recording every key pressed on a keyboard. As a core feature of many Infostealers, it allows attackers to capture passwords, sensitive messages, and credit card details in real-time as they are typed.
One of the oldest and most persistent threats in cybersecurity is Keylogging. It acts as a silent observer behind your keyboard. When an Infostealer with keylogging capabilities infects a device, it doesn't just steal what's already on the computer—it monitors everything the user types from that moment forward.
A keylogger functions by intercepting the signals sent from the keyboard to the operating system. The process involves:
Even if a website hides your password behind asterisks (****), Keylogging remains effective because it captures the raw input from the physical or virtual hardware. Advanced security platforms like Dark Radar look for unauthorized "keyboard hooks"—the specific system calls used by malware to listen to keystrokes—to flag potential infections.
In a professional security audit, detecting a keylogger requires monitoring process behavior. Analysts look for background tasks that exhibit high write activity to hidden logs or suspicious outgoing network requests. While Multi-Factor Authentication (MFA) helps mitigate the damage, it does not prevent the initial theft of the password itself.
In summary; Keylogging is the ultimate surveillance tool for cybercriminals. Protecting against it requires robust endpoint protection (EDR) and constant monitoring of system integrity to ensure your inputs remain private.
