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)
“There is the falsely mystical view of art that assumes a kind of supernatural inspiration, a possession by universal forces unrelated to questions of power and privilege or the artist’s relation to bread and blood. In this view, the channel of art can only become clogged and misdirected by the artist’s concern with merely temporary and local disturbances. The song is higher than the struggle.”
—Adrienne Rich (b. 1929)