Rift Battles, 7:38 PM +10GMT
Cheater defeated my elder sign node with maxed lvl doubles and a high level lightweight catalyst with two completely uninvested fighters, which I confirmed by attacking his base - sure enough, they literally have no investment and just one/no moves. Other attacks are also fishy, but this was the only attack that was blatant.
Edit: More evidence. I revenged the attack and he/she is now at 1303 - a dramatic increase in rift rating compared to the Gold 4 bracket last week...