According to antivirus vendor F-Secure, the Lovsan (MSBlast) worm both succeeded and failed in its effort to attack Microsoft. At issue is the popular windowsupdate.com domain visited by millions to patch their chosen flavor of Windows. Microsoft declared victory by pulling the plug on the domain. According to Mikko Hypponen, Director of Anti-Virus Research at F-Secure Corporation. "Windowsupdate.com will probably never return. So in this sense, the worm accomplished what it wanted: windowsupdate.com is no more."