NIDA Edits Wiki Entry

Is it proper for a government agency to edit Wikipedia to push an agenda, while deleting anything that questions that agenda? Well that is what exactly what happened.

(The Politico) In late August, someone with an IP address that originated from the National Institutes of Health drastically edited the Wikipedia entry for the National Institute on Drug Abuse, which operates within NIH. Wikipedia determined the edit to be vandalism and automatically changed the definition back to the original. On Sept. 18, the NIH vandal returned, according to a history of the site's edits posted by Wikipedia. This time, the definition was gradually changed, presumably to avoid the vandalism detector.

If they would have had proper software or knew how to hide their ip address, would they have gotten away with it?