most users believe that when they lock the computer and leave, it is impossible for anyone to access your information. However, the researcherRob Fuller has demonstrated how an attacker can obtain system access credentials in a few seconds if the machine is logged on.
As a tool you don't need anything more than a small USB device, which can be obtained through the Internet by some50 Dollars.
The attack has proven to be effective on Windows systems 98, Windows 2000, Windows XP, Windows 7 and Windows 10. Also Mac OS X El Capitan and Mavericks systems are affected. the time it takes to capture the computer user and password varies depending on the system, but the average is a few 13 Seconds, according to the researcher.
The manufacturers of the device claim to be overwhelmed due to the high demand after the discovery of this safety flaw.