In computer security, a covert channel is a type of computer security attack that creates a capability to transfer information objects between processes that are not supposed to be allowed to communicate by the computer security policy. The term, originated in 1973 by Lampson is defined as "(channels) not intended for information transfer at all, such as the service program's effect on system load." to distinguish it from Legitimate channels that are subjected to access controls by COMPUSEC.
Read more about Covert Channel: Characteristics, Identifying Covert Channels, Eliminating Covert Channels, Data Hiding in OSI Model, Data Hiding in LAN Environment By Covert Channels, Data Hiding in TCP/IP Protocol Suite By Covert Channels
Famous quotes containing the words covert and/or channel:
“This declared indifference, but as I must think, covert real zeal for the spread of slavery, I can not but hate. I hate it because of the monstrous injustice of slavery itself. I hate it because it deprives our republican example of its just influence in the world ... and especially because it forces so many really good men amongst ourselves into an open war with the very fundamental principles of civil liberty.”
—Abraham Lincoln (1809–1865)
“This is what the Church is said to want, not party men, but sensible, temperate, sober, well-judging persons, to guide it through the channel of no-meaning, between the Scylla and Charybdis of Aye and No.”
—Cardinal John Henry Newman (1801–1890)