Use Microsoft AntiVirus API for File Upload Scanning

I don't want to resurrect an old question, but I was in need of a solution that the question was asking about. I evaluated a lot of things and came to the conclusion that there was really not one good .NET library for this. So I made my own.

The library is called nClam, and it connects to a ClamAV server. It is open-source (Apache License 2.0) library which has a very simple API. You can obtain it here: https://github.com/tekmaven/nClam. There is also a nuget package: nClam.

I hope someone who stumbles on this question in the future benefits from my library!

The reason why you might want a specific SharePoint anti-virus solution is for scanning inside SharePoint lists. For example, traditional virus scanners cannot scan inside document libraries and attachments to list items.

This might be overkill if every user of your MOSS solution has anti-virus on their desktops as these will scan a Word document when it is opened from SharePoint. Even though, there is an argument for having a different vendor's anti-virus product installed on your servers from what is installed on your desktops as extra protection (e.g. one product's scanning heuristics might be a little different or its virus signatures might be older).

You need to weigh up the cost/benefit ratio and ask what importance your company gives to security.