Пользователь reddit cronek играясь со свои RTL-SDR оборудованием случайно обнаружил, что микрофон его ноутбука постоянно передает записанное аудио по радиоканалу.
I accidentally stumbled upon a signal in the 24MHz range, appearing to be 4 carriers. I tuned to it and heard silence, then someone came into my office and started talking and I could hear them speak. The signal appeared to be coming from my other laptop (not the one running the SDR) and was pretty weak (my antenna, the crappy one that comes with the dongle, stuck to a metal stapler was right next to the HP laptop).
http://www.rtl-sdr.com/potential-major-security-flaw-hp-laptop-discovered-rtl...
http://www.reddit.com/r/RTLSDR/comments/1le3if/so_i_discovered_that_my_hp_lap...