Should you run Windows Defender and the Malicious Software Removal Tool? Microsoft has created several security solutions in the past that are either available as standalone downloads or integrated in Windows directly. The most common ones are Windows Defender, which Microsoft included in Windows Vista and successive versions of the Windows operating system, Microsoft Security Essentials, which is offered as a standalone version for versions of Windows prior to Windows 8, and the Malicious Software Removal Tool which is also available as a standalone version. Windows Defender is a real-time antivirus solution that is active by default on systems running Windows 8 and newer. While some protection is better than none usually, it is fairly limited when it comes to protecting Windows from attacks and ranks low in independent antivirus tests. The Malicious Software Removal Tool on the other hand has been designed specifically to remove malware from systems that are already infected (hence the name). read more http://www.ghacks.net/2015/10/20/sh...nder-and-the-malicious-software-removal-tool/