Source: http://news.softpedia.com/news/fraud-alert-steam-vac-remover-doesn-t-unban-you-497679.shtml
Steam gamers, don't fall victim to this new scam
Steam users are being targeted in a new fraud campaign, one that targets users that were banned via the Steam VAC(Valve Anti-Cheat) system.
Since its introduction, the Steam VAC system has been implemented in around 400 Steam games and allow game makers and especially multiplayer server administrators to ban users that cheat or act out online.
The system has been deemed by most gamers as a plague to the Steam community, who at one point or another have a close encounter with the notorious VAC popup.
For many years, there were hundreds of Youtube videos that advertised magical cures to get around this popup but only tricked into installing malware on their computers.