Wikipedia definition of Information Warfare

Information warfare is the use and management of information in pursuit of a competitive advantage over an opponent. Information warfare may involve collection of tactical information, assurance that one's own information is valid, spreading of propaganda or disinformation among the enemy, undermining the quality of opposing force information and denial of information collection opportunities to opposing forces.

Black propaganda
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Black propaganda is propaganda that purports to be from a source on one side of a conflict, but is actually from the opposing side. It is typically used to vilify, embarrass or misrepresent the enemy. It contrasts with grey propaganda, the source of which is not identified, and white propaganda, in which the real source is declared. The term is also sometimes used as a synonym for particularly malicious wartime propaganda or falsification of information that is captured by an enemy.

Black propaganda may be generated by altering genuine enemy propaganda in such a way as to distort its message. This is a particularly powerful tool if the target audience has a poor understanding of the language of the enemy.

Marc had touched on this in some emails we exchanged

Here is a site from the wiki on Information Warfare