In my case it was actually a trademark infringement legal action. My domain got listed as hosting a site that sold knock-off sunglasses[1] . The plaintiff in the case got a court order to transfer all the suspected domains to them, a list of about 1,000 domains. I got no notice, my domain just suddenly disappeared.
I had my lawyer contact the plaintiff, in which we apologized, told them we had no idea this had happened, and promised to up the security (in reality I just nuked the WP site.) About a week or so later they transferred the domain back. For me this was annoying and cost a few hundred bucks in legal fees, but not that big a deal. Obviously not the case for Susam.
[1] My (largely abandoned) self-promotion Wordpress site got hacked, and was used to host an e-commerce site. Weirdly the domain was ${my_real_name}.com, hardly an obvious choice for selling knock off sunglasses.