- How Hackers Use Power LEDs To Spy On Conversations 100 Feet Away - "Hackers have developed a new twist on the old military technique, known by the National Security Agency codename of TEMPEST, of spying through the use of leaking emanations." https://www.forbes.com/sites/daveywinder/2021/08/15/hackers-use-flickering-power-leds-to-spy-on-conversations-100-feet-away 3 comments worldnews