Mcdefender.exe is a new process related to Internet Security virus. It is impossible to remove Internet Security malware effectively without first terminating mcdefender.exe. In this article we recommend the free utility that can help you stop this malicious process running and preventing you from removing the fake antispyware from your computer. By continuing to read this post you will find out how to effectively get rid of Internet Security rogue and of its fake ‘infected with W32/Blaster.Worm’ pop up alerts.