[olug] Fwd: Security breach?

[Jack]

Turns out MandrivaLinux 2011 is distributed with the shorewall turned off and 
no ability for the non-techie user to turn it on.

I am now running Fedora 17.  Too bad;  I started with Mandriva back when it 
was Mandrake in the early days, and wish it well.

     Jack

-------- Original Message --------
Subject: 	Security breach?
Date: 	Tue, 05 Jun 2012 15:35:22 -0500
From: 	Jack <jdunn110 at cox.net>
To: 	Omaha Linux Users Group <olug at olug.org>



I'm running MandrivaLinux x64 2011 (KDE4) updated behind a commercial Trendnet
router.

I notice I've begun receiving spam emails supposedly from people in my address
book (thunderbird).  When I run 'top' I don't find any obvious intruder
files.  Having received three of these now, all from different addresses and
people, I suspect my computer is compromised.

This prompted me to check my security settings.  Turns out I had left the
firewall down from my last full re-install a couple of weeks ago.  It's back up.

Any suggestions for ridding a Linux system of malware?

     Jack