To be frank there is no serious viruses found so far for Linux. The main reason is Linux is quite secure as compare to Windows. Also, viruses cannot cause any serious damage if they are not activated by root.
However if you are using any one of the following program then consider getting a good virus scanner:
- Windows via Samba
- Email server
- Linux as a router
- Windows application via wine or CodeWeavers office etc
Not to worry, Grisoft expands its award-winning product line with AVG Free for Linux – a free version of its advanced anti-virus tool designed specifically for home use on the Linux desktop. So now, home users of Linux OS can join millions of satisfied customers in enjoying the benefits of AVG Anti-Virus protection!
AVG Free for Linux is the first commercial-grade anti-virus product developed for free home use, providing maximum anti-virus protection for Linux computers.
Get Linux antivirus download from grisoft website. Please note that it only works with Red hat and Suse. For mail server I still like a Mail Virus Scanner program.