Researchers say sensitive data can be extracted from air-gapped networks via a wireless router’s blinking LEDs. Researchers have uncovered a new data extraction hole inside air-gapped networks that ...

Researchers have discovered a way to hack into a computer by aiming a drone at the tiny blinking light found on most Windows desktops. The espionage technique was successfully demoed earlier this ...

If you want to blink an LED once every second, you could use just about any old timer circuit to create a 1 Hz signal. Or, you could go the complicated route like [Anthony Vincz] and grab 1 Hz off a ...