Didn't know what bad jacketing was, so looked it up (didn't expect to find anything for fedjacketing, hence why I just asked). Its interesting that Fedjacketing shows up as a form of badjacketing on the wiki page.

To cite the Wikipedia page:

Bad-jacketing is a term for planting doubt on the authenticity of an individual's bona fides or identity. An example would be creating suspicion through spreading false rumors, manufacturing evidence, etc., that falsely portray someone in a community organization as an informant, or member of law enforcement, or guilty of malfeasance such as skimming organization funds.