olemus
vahend, mille kaudu teave lekib süsteemist:
varjatud andmeedastuskanal ,
mis rikub turvapoliitikat
= a channel that is not meant to route information, but nevertheless does

ISO/IEC 2382:
edastuskanal, mida saab kasutada turvapoliitikat rikkuvaks andmeedastuseks
= transmission channel that may be used to transfer data in a manner that violates security policy

ISO/IEC 15408, CC:
ebaseaduslik sihilik signaalikanal,
mis võimaldab kasutajal varjatult eirata
hindamisobjekti mitmetasemelise eraldamise poliitikat
ja jälgimatuse nõudeid
= enforced, illicit signalling channel that allows a user to surreptitiously contravene the multi-level separation policy and unobservability requirements of the target of evaluation

ülevaateid
https://en.wikipedia.org/wiki/Covert_channel

http://nob.cs.ucdavis.edu/classes/ecs235b-2011-01/slides/sli15.pdf

https://arxiv.org/pdf/1306.2252.pdf

https://www.icann.org/news/blog/what-is-an-internet-covert-channel

https://www.icann.org/news/blog/what-is-a-dns-covert-channel

https://scholarworks.rit.edu/cgi/viewcontent.cgi?filename=0&article=1784&context=other&type=additional

http://caia.swin.edu.au/cv/szander/publications/szander-ieee-comst07.pdf

https://fas.org/irp/nsa/rainbow/tg030.htm

vt ka
- ajastuse peitkanal
- kiirguseturve