Osawarepro2009.microsoft.com is a malicious web page that promotes the fake anti-spyware program Antivirus System PRO. Sneaky Trojans help spread Osawarepro2009.microsoft.com by surreptitiously infecting users' systems. On entering a system, Osawarepro2009.microsoft.com will display a fake warning that the victim is browsing an infected website. The victim will then be advised to purchase Antivirus System PRO in order to continue browsing safely. Osawarepro2009.microsoft.com and Antivirus System PRO are not to be trusted and should be removed with a recognized security application immediately.