What if, for some reason, the webcam's LED failed (e.g., it physically stopped working)? In case of a malware attack, you might not even realize that your webcam is being used even if the malware can't have access to control the LED. In my opinion, the most effective way to protect yourself against webcam hacking is to physically cover the camera with a sticker or cover when it’s not in use. Simply put, I believe physical safeguards are more reliable than software-based solutions whenever possible.