-*- mode: outline; coding: utf-8 -*-

* Rootkit.

** Debian.

  $ sudo apt-get install rkhunter chkrootkit

*** rkhunter.

  $ sudo rkhunter -c
...

  http://www.rootkit.nl/projects/rootkit_hunter.html

***

  $ sudo chkrootkit
...

* Virus.

** Debian.

*** ClamAV.

anti-virus utility for Unix.

  $ sudo apt-get install clamav