I know for a fact that some people used to post my pictures without my permission, during my first year on HRT, before orchi and t-shave, when I was very active on Youtube and Flickr, pretending they were theirs, presenting themselves as TGs, CDs, even cis women or what have you, using a made-up name along with my images, obviously without my knowledge and permission. I knew about that through TG friends at the time, or owners of TG support sites where I posted, just like this one, and even a bunch of years later by my BF who has helped inform me about it so I can get rid of a lot of stuff that was posted without my permission. At this point I think there is nothing left, and thank God I was smart enough to never ever posting any real info about me. But if that happened to me, I see no reason why it wouldn't happen to others. I find it so pathetic, the fact of using other people's pictures, videos or what have you as their own. I think such practice is done just by a loser among losers but it's always a learning experience to realize it does happen, so one can be more careful when posting stuff on the Web.
Cheers
Bibi B.