The rules were violated in such a way that a player gained an unfair advantage. How is this not simple? The definition does not specify that it has to be perpetrated by the one receiving the advantage, that the ones perpetrating the cheating have to be doing it on purpose, or that the ones perpetrating it have to directly benefit by it. Were the rules broken? Yep. Did it directly lead to someone gaining an unfair advantage? Yep. Did those in charge attempt to rectify the situation so that a player did not have an unfair advantage over another? Nope. Looks like cheating to me.