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Date: Fri, 19 Jun 2015 16:26:33 -0400
From: Ernie Luzar <luzar722@gmail.com>
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Subject: non-routeable traffic from 10.0.0.0/8
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Hello  List;

In my firewall log I see log entries showing inbound traffic being 
blocked from ip addresses in the 10.0.0.0/8 range.

My question is what purpose can this be used for by a hacker?