We all know that anti-virus software and strong passwords are must-haves to stop hackers. But, what if hackers could steal those passwords when your computer is not even connected to the Internet? Researchers from the Georgia Institute of Technology are saying that's real possibility due to the signals emitted by your computer or smartphone.
When your computer performs a spell check, opens a program or even just types a letter, it emits a tiny, imperceptible signal.
And, while we can't hear those signals, there are antennas, microphones and even AM radios that can. That means a hacker could sit near you in a public space and intercept the password you're typing into your computer without you knowing it by using an antenna in a briefcase or backpack.
Just about everything you do on your computer leaks a signal, but some are louder than others and easier for hackers to pick up. The researchers are trying to find out which functions leak the strongest signal to figure out how to quiet them down.