Antivirus

Antivirus engines are not only common with windows. Also with linux it is necessary to scan dokuments an files. Even more important, since plattform independent viruses and worms are getting more common due to framework based software engeneering:

Read about:

• ClamAV
• Free Avast
• Free AVG
• F-Prot
• Bit Defender

• http://opensource-sidh.blogspot.de/2011/10/top-5-anti-virus-for-ubuntu-free.html

I by myself am using clamav and bitdefender due to its very good integration in the debian package system

ClamAV

Use the Ubuntu software center ;-) or search in google.

Bit Defender

sudo echo "deb http://download.bitdefender.com/repos/deb/ bitdefender non-free" >> /etc/apt/sources.list.d/bitdefender.list

wget http://download.bitdefender.com/repos/deb/bd.key.asc 
sudo apt-key add bd.key.asc
rm bd.key.asc

apt-get update && \ 
sudo apt-get install bitdefender-scanner-gui bitdefender-samba bitdefender-mail