The hackers need a clean line of sight between their electro-optical sensor-equipped telescope and the hanging light bulb concerned. So, if the curtains or blinds are closed on a window ...

"You just need line of sight to a hanging bulb, and this is it." In their experiments, the researchers placed a series of telescopes around 80 feet away from a target office's light bulb ...

Spies and hackers can eavesdrop on conversations from 82 feet (25 metres) away by analysing the vibration patterns in a hanging light bulb, a study has found. The 'lamphone' technique discovered ...