Editing Covert channel (section)

{{Short description|Computer security attack}}
In [[computer security]], a '''covert channel''' is a type of [[attack (computing)|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 [[Butler 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]].<ref>{{Cite Q | Q56446421 }}</ref>