I was a mod for quite a while on a large sport bike racing forum. It was a great group like in here, but every now and then a scumbag would sneak in and pull crap like this. He would get banned and many times show up a month or two later with a different IP address and try it again. I personally tracked one down an hour from my house and got some compensation for a member that got burned. One of our mods was an active duty Cyber-security specialist in the military. He could get a mind blowing amount of info on someone with a quick deep dive on some ***** when necessary. We had about 250,000 active members at the time, so it's hard to catch everything. It's a tough job to keep everything clean for the members.