Editing Covert channel (section)

==Further reading==
* [http://www.multicians.org/timing-chn.html Timing Channels] an early exploitation of a timing channel in [[Multics]].
* [http://www.securityfocus.com/news/11406 Covert channel tool hides data in IPv6], SecurityFocus, August 11, 2006.
* {{cite book |author1=Raggo, Michael |author2=Hosmer, Chet |title=Data Hiding: Exposing Concealed Data in Multimedia, Operating Systems, Mobile Devices and Network Protocols |publisher=Syngress Publishing |year= 2012 |isbn=978-1597497435|url=http://www.spy-hunter.com}}
* {{cite news |author=Lakshmanan, Ravie |date=2020-05-04 |title=New Malware Jumps Air-Gapped Devices by Turning Power-Supplies into Speakers| url=https://thehackernews.com/2020/05/air-gap-malware-power-speaker.html}}
* [https://github.com/cdpxe/Network-Covert-Channels-A-University-level-Course/ An open online class on covert channels] (GitHub)