[bringtheaction]

> To detect data from your torrent client we provide a magnet link to a fake file. The magnet contains an http url of a controlled by us tracker which archives the information coming from the torrent client.

That’s pretty clever. Alternatively they could have a unique file of garbage and have some seeders for it and then when someone connects it would also be the same person. But the tracker solution is less work and probably almost entirely as good.