Torrents.Ru is actively fighting with cheaters

More recently, I ran through the news about GreedyTorrent , a program capable of increasing the counter of given traffic, which caused a surge in public opinion. And since April 1st, the first precedents for catching cheaters appeared on Torrents.Ru. The news is pleasant, but still, how do they catch them? Only the following algorithm comes to mind. On all torrents to compare the number of sent and received traffic. If there are strong discrepancies, put all users in the gray list. Then it remains to compare this gray list with lists from other torrents. The intersection of these lists, in theory, should indicate potential cheaters. And what ideas do you have?