well last night i tried to play on any server it said ur steam ID is banned from all VAC servers so i researched it a bit. it said its auto ban when computer detects 3rd party program that writes in DDl's or other files. well i dont run haxs. but i did run exploit for my phone last night to change windows to android. and also had a Trojan which description was downloads unwanted software on your machine. so i was wondering if there any way to fix this. and should i never run any kind of exploits while playing this game? or do i have to contact steam themself
if you are VAC banned, you either had your steam account stolen and someone used it for hacking or you actually ran hacks yourself. I can't really help you to get unbanned, but what is your steamid so I can check if you actually are VAC banned.
From what I gather, you/your account was found hacking here and were not yet VAC banned as it may take up to two weeks to actually get banned. Then when it caught up, you were VAC banned. Unfortunately, you cannot have these bans reversed. I'd be more careful what you download, half the shit out there has viruses or whatnot. When in doubt upload it to www.virustotal.com As a side note, I checked out that demo and can confirm that it was a hack with an aimbot.