How can I have a Very secure Ubuntu Desktop system [closed]
How can I have a Very secure Ubuntu Desktop system and where is the best place online to learn about hardening Linux, not just Ubuntu?
Basic rules of computer security: strong passwords, have a firewall set up, don't click on something you're not sure about, and don't log in as admin/root unless you 100% have to.
Viruses aren't as much of a problem on linux as on windows, but social engineering in emails, javascript in browsers, and malicious links are still there.
Among other things, set up an admin password on your router; see my answer on this question.
A good place to start learning about security is the movie "Blackhat", now in theaters (yes, seriously). There's also learning from other perspective, from intruder's perspective. You can search online for tutorials on basic pentesting/ethical hacking and books.
Here's some of my favorite sources to start you off on reading about security.
cyberciti blog
security.stackexchange.com
https://serverfault.com/
Ubuntu Wiki
To harden Ubuntu servers, there are a number of packages that can be found with:
apt-cache search harden-
to install all of them, simply use:
apt-get install harden-*
and start reading the hardening documentation now installed on your system in /usr/share/doc/harden-doc
For more information, visit the Securing Debian Manual.