We're seeing a lot of what I assume are exploit files coming from yahoo.com.

They are all base64 encoded HTML attachments with a bunch of javascript in them.

http://pastebin.com/ZSmW0kwW

I've gone ahead and put a pretty high scoring rule in place to block things 
that are:

1) From yahoo.com
2) Have a HTML attachment
3) Are base64 encoded

My question is how important is #1.   I'd think a HTML attachment is a little 
unusual period but how common would it be that there was one and it was base64 
encoded?

I'm considering just another lower scoring rule for #2 and #3 because I have 
seen them from places other than yahoo.com

Chris

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Chris Owen         - Garden City (620) 275-1900 -  Lottery (noun):
President          - Wichita     (316) 858-3000 -    A stupidity tax
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