olemus
peitkanal, milles protsesside signaalivahetuse ajastus on jälgitav süsteemiressursside (näiteks protsessoriaja) tarbimise kaudu
= a type of covert channel conveying information by modulating some aspect of system behavior over time

ülevaateid
https://cwe.mitre.org/data/definitions/385.html
https://www.cs.wmich.edu/~elise/courses/cs6800/CovertChannel.pptx
http://people.cs.georgetown.edu/~clay/research/pubs/cabuk.ccs2004.pdf
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7219501/