optical covert channel – PossibleThreat Articles

Researchers transmit data covertly by altering screen brightness

February 7, 2020 0 Comments air gapped, air-gapping, ben-gurion university of the negev, lcd pixels, optical covert channel, pixel density, security threats

Credit to Author: Danny Bradbury| Date: Fri, 07 Feb 2020 12:02:41 +0000

Researchers have retrieved data from a disconnected computer by altering its LCD’s pixel density just enough for a camera to pick it up.<img src=”http://feeds.feedburner.com/~r/nakedsecurity/~4/057xpJvNRZ0″ height=”1″ width=”1″ alt=””/>