CoreGuard Antivirus is a new fake security scanner (rogue).
Stay away from these sites:
bitcoreguard.net (72.232.187.197)
bitcoreguard.com (72.232.187.197)
guardlab.com (72.232.187.198)
guardav.com (72.232.187.198)
coreguard2009.com (78.46.151.181)
coreguard2009.biz (78.46.151.181)
coreguard2009.net (78.46.151.181)
coreguardlab2009.biz (95.211.14.161)
coreguardlab2009.net (95.211.14.161)
coreguardlab2009.com (95.211.14.161)
guardlab2009.biz (76.76.103.164)
guardlab2009.net (76.76.103.164)
guardlab2009.com (76.76.103.164)
BleepingComputer CoreGuard Antivirus 2009 removal guide.
Thanks to MAD