http://blogs.msdn.com/b/tzink/archive/2009/11/16/virus-attachments-vs-email-classified-as-malware.aspxThis probably belongs in the “Well, no kidding” category but I thought I would post it anyhow.&#160; Since near the beginning of this year, I have been tracking how much email our filters classify as malware.&#160; I then took those values, broke themenTelligent Evolution Platform Developer Build (Build: 5.6.50428.7875)http://blogs.msdn.com/b/tzink/archive/2009/11/16/virus-attachments-vs-email-classified-as-malware.aspx#9923391Tue, 17 Nov 2009 06:02:37 GMT91d46819-8472-40ad-a661-2c78acb4018c:9923391tzink<p>Yep.</p> <div style="clear:both;"></div><img src="http://blogs.msdn.com/aggbug.aspx?PostID=9923391" width="1" height="1">http://blogs.msdn.com/b/tzink/archive/2009/11/16/virus-attachments-vs-email-classified-as-malware.aspx#9923377Tue, 17 Nov 2009 05:17:17 GMT91d46819-8472-40ad-a661-2c78acb4018c:9923377daviddcawley<p>&quot;I feel that removing the outliers results in an outcome that makes sense and fits the expectation&quot; - I believe that's called 'Prior Hypothesis Bias' :)</p> <div style="clear:both;"></div><img src="http://blogs.msdn.com/aggbug.aspx?PostID=9923377" width="1" height="1">