Should I be concerned for Viruses when I download through Steam?

Solution 1:

win32.BogEnt is a known false positive for digital download games. It should be fine to play this. win32.BogEnt is a heuristic-based indicator. This is not based on the scanned file being known to the software as a virus, but rather the software doing some analysis on the file and deciding that it MIGHT be a virus based on stuff like it sharing certain code fragments with a virus, or it might use rarely used instructions, or it might be run in a contained sandbox environment to see what it does. Heuristics frequently give false positives.

The overwhelming majority of games on Steam are pretty safe to download, especially if they're already on there for a couple of months. However, some games get bundled with invasive DRM, although that's not really a virus.

Solution 2:

I suppose you can never be too safe, but you shouldn't really be concerned for viruses on Steam. [susp] in the virus' name stands for "suspicious", which means the anti-virus itself isn't sure if it's even a threat or not. Games downloaded on Steam are (supposed to be) virus-free.