I like Forefront a lot, it is built on the excellent Windows Defender (formerly GIANT AntiSpyware) technology and in recent Virus Bulletin tests it came out top of the pile, even beating Eset’s NOD suite in reliably detecting all signatures in the wild and avoiding false positives.

It provides an ‘all-in-one’ anti-virus anti-malware solution which replaces Windows Defender and integrates fully with Microsoft Update:

1. Download the Microsoft Forefront Client Security Evaluation from Microsoft… HERE

 2. Burn / mount the image

 3. Open an elevated command prompt (run cmd as administrator)

 4. Navigate to \CLIENT (\CLIENT\X64 if you have 64 bit Windows)

 5. Execute “clientsetup /nomom”

That’s it!

You can literally install and forget about it, secure in the knowlege that you’re about as protected as you can be against malicious threats.