A black operation or black ops is a covert or clandestine operation by a government agency, a military unit or a paramilitary organization; it can include activities by private companies or groups. Key features of a black operation are that it is secret and it is not attributable to the organization carrying it out.
A single such activity may be called a black bag operation; that term is primarily used for covert or clandestine surreptitious entries into structures to obtain information for human intelligence operations. Such operations have been carried out by the FBI, CIA, KGB, Mossad, MI6, MI5, ASIS, COMANF, DGSE, AISE, CNI, MSS, R&AW, DGFI, ROK UDU, SVR, FSB, Kuwait 25th Commando Brigade, ISI and the intelligence services of other states.
The main difference between a black operation and one that is merely secret is that a black operation involves a significant degree of deception, to conceal who is behind it or to make it appear that some other entity is responsible (e.g. false flag operations).
View More On Wikipedia.org