Best I can tell, https://support.steampowered.com/kb_article.php?ref=1223-QROC-4460 will be your best option to report this.
Linked from the green bit at the bottom of https://support.steampowered.com/kb_article.php?p_faqid=301#general ShadowMoses wrote: > I am writing here because I hope that steam can do something from here. > Also you should all remind your members not to give there passwords out to > anyone. His steam community page is currently here. > http://steamcommunity.com/id/silverssilvers > His current name is Message_system_help. > > If someone from steam reads this please either ban or do what you can to > prevent this guy from doing this. > > This is the message he wrote to one of my clan members. > > > |Think| Snake Dr.: hello i am getting this chat froom "message system help > |Think| Snake Dr.: and they want my username and password > |Think| Snake Dr.: i think its bull > |Think| .:ShadowMoses:.: never give your password > |Think| .:ShadowMoses:.: they will never request a password > |Think| Snake Dr.: yea thats what i thought too > |Think| Snake Dr.: here is what they said > |Think| Snake Dr.: Message_system_help: Hello sir Steam is tracking down 2 > ip's on this account please confirm this is your account by typing in > Username/password > |Think| Snake Dr.: umm i don;t give out my userername and password thought > steam chat... u can contact me thought the email provided when i created > this acct > Message_system_help: Sir,Its that we have nerver thought it could happen we > have to ip's on this account > Message_system_help: just to confirm please type your account username and > password > |Think| Snake Dr.: if this is to conform then u should have my email on file > and u can contact me though that thank you > Message_system_help: Sir We take hacking real serious if not we just disable > your account > Message_system_help: we need to confirm > Message_system_help: Please sir > Message_system_help: Ok no reply means your hacking this account > Message_system_help: We are going to disable this in 2 hours > |Think| Snake Dr.: am i trying to find out if this is for real > |Think| Snake Dr.: hold one min > Message_system_help: Sorry > Message_system_help: Goodbye > Message_system_help: we nerver thought this would happen > Message_system_help: We going to start a forum tommrow > Message_system_help: Good-bye your account is going to be disabled "hacker" > |Think| .:ShadowMoses:.: is it on steam > |Think| Snake Dr.: yea i got a friend requiest from steam friend > |Think| .:ShadowMoses:.: give me the address of the community person > |Think| .:ShadowMoses:.: he is in your friends list > |Think| Snake Dr.: yea he is > |Think| Snake Dr.: what do u mean community person > |Think| .:ShadowMoses:.: i got him i am sending an email to steam > |Think| Snake Dr.: ok thanks... when he asked me for my password i thought > it smelled fishy > > Best regards, > > Shadow > > > _______________________________________________ > To unsubscribe, edit your list preferences, or view the list archives, please > visit: > http://list.valvesoftware.com/mailman/listinfo/hlds > > __________ Information from ESET NOD32 Antivirus, version of virus signature > database 3053 (20080424) __________ > > The message was checked by ESET NOD32 Antivirus. > > http://www.eset.com > > > > _______________________________________________ To unsubscribe, edit your list preferences, or view the list archives, please visit: http://list.valvesoftware.com/mailman/listinfo/hlds