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 ...

This is a simple blinking led circuit powered from 220V that can be used to mark special places or as voltage indicator. The voltage from the mains charges the capacitor through R1 resistor and D1 ...

Air-gapped computers aren't physically connected to any network and so should be protected from remote hackers. However, Stuxnet showed air-gaps can be breached. Besides that, an insider could always ...