Do I need to worry about viruses and defragmentation?

[Dotan Cohen]

You do not need to defragment or run a virus checker. Linux systems
can be compromised, but if you have no open ports then just don't
install software from questionable sources, and be aware of
browser-based attacks.

-- 
Dotan Cohen

http://what-is-what.com
http://gibberish.co.il
א-ב-ג-ד-ה-ו-ז-ח-ט-י-ך-כ-ל-ם-מ-ן-נ-ס-ע-ף-פ-ץ-צ-ק-ר-ש-ת

ä-ö-ü-ß-Ä-Ö-Ü