OK, I admit this one borders on cybersecurity sci-fi, but if it’s true…wow. While you know that leaving sensitive information on our computer screens while we’re away is a bad idea, you probably didn’t know that the bad guys can point special ultrasonic listening devices at a computer screen and “read” whats on the screen. What! Seriously? According to a presentation given at the Crypto 2018 conference, attackers could gain valuable information and initiate all sorts of stealthy surveillance simply by analyzing livestreams and recordings taken near said monitor. This technique, based on something called acoustic leakage, analyses ultrasonic sound waves and poses a whole new vulnerability in cybersecurity.