Accepted I got scammed

Victim :
steamID: ZonCasTer22
steamID32: STEAM_0:0:42485455
steamID64: http://steamcommunity.com/profiles/76561198045236638
customURL: http://steamcommunity.com/id/zonthesecond
steamrepURL: http://steamrep.com/profiles/76561198045236638

I didn't remember the scammer name but he took over my account and he's keep go on posting all the web to my friend

Screenshots:
http://s1240.photobucket.com/albums/gg487/zoncaster/?action=view&current=hacker.png

http://s1240.photobucket.com/albums/gg487/zoncaster/?action=view&current=hacker2.png

Description :
So he added me on steam and he send me the web to receive the game right after i filled up the information 10 minutes later he changed my pass steam and email nothing else i can do if there's anything else you need just tell me that's all i know and all i remember

Tagging as possible account hijacking. File an appeal once you get a resolution from Steam Support.