I also got hacked by the same user and I know that he is french and has some french IPs (I found a lot of them with the help of some forums admins). I got some old IPs which are not using proxy and I'm preparing a police complaint in France to get the identity of this person.
I probably got a virus/trojan and he was able to open a teamviewer session with my computer and stole my wallets. Unfortunately, I forgot a backup wallet which was unencrypted so he was able to easily transfer my bitcoins.
I also have a few of its online identites and you can find him on
http://jomgegar.com/ (which clearly is a hacker forum) with username tazbox. He uses username tazja on bitcointalk and some other ones on french forums.
If someone wants to participate or help, you're welcome. This kind of hack can lead to prison (5 years) here in France and I'm determined to send him there.
Has anyone directly contacted him ?