Public evidence is hard to track down (especially quickly) since raids on private trackers are so rare and like I said almost all of these issues get solved out of court in non-disclosed settlement offers, but this isn't just speculation either. It's clear from history and what we do know that they're very much interested in user data and willing to file lawsuits:
https://torrentfreak.com/mass-bittorrent-lawsuits-now-target...
https://www.wjunction.com/threads/elitebits-private-bittorre...
> How many people got in trouble after the What.CD raid?
The damage there was limited since according to the admins all site and user data was destroyed.