Researchers discover how to spy on remote computer screens using a webcam mic and machine learning

It turns out it doesn't take much for hackers to see what's being displayed on your computer screen. A team of researchers have discovered that ultrasonic sounds picked up by a webcam microphone can be analyzed using machine learning to determine what's being shown on a remote computer screen. The attack could allow anyone savvy enough to spy on someone's browsing activity with ease. Researchers found that ultrasonic sounds picked up by a webcam mic can be analyzed using machine learning to determine what's being shown on a remote computer screen Researchers observed frequencies inaudible to the human ear being emitted from LCD displays. They found that microphones from webcams, voice-activated speakers and smartphones were able to record those noises.