
How can I tell?
I've been trusting the network guys here to keep this in check. Whenever I hear about a new outbreak I double-check to make sure they already know. Either they're very good, or simply disabling preview and not opening the obvious spam mostly alleviates the problem. I haven't noticed any problems.
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Microsoft offers them the one thing most business people will pay any price for - the ability to say "we had no choice - everyone's doing it that way." -- [link|http://z.iwethey.org/forums/render/content/show?contentid=38978|Andrew Grygus]