Nine easy security tools
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If you configure all these tools, the end result should be a reasonably secure system. However, a basic axiom of security is defense in depth – meaning you can never have enough tools to keep your computers safe.
The next time you install, consider encrypting your home directory. (You can do it later, but that immensely complicates the procedure.) If you are really serious, consider learning SELinux [16] or AppArmor [17] and writing your own security rules. Or, as fond as you may be of Ubuntu, you might consider switching to Qubes OS [18], which builds different levels of security into the operating system and is available as a Debian derivative.
However, such extreme tactics are more than many users are willing to try. Stick with the suggestions here, and your system should be vulnerable to little except human engineering, the exploitation of user gullibility – and against that, nothing can protect you except common sense.
Infos
- ClamAV: http://www.clamav.net/
- SpamAssassin: https://spamassassin.apache.org/
- Bogofilter: http://bogofilter.sourceforge.net/
- Lynis: https://cisofy.com/lynis/
- Firejail: https://firejail.wordpress.com/
- Signal: https://signal.org/
- Ring: https://savannah.gnu.org/projects/ring/
- Umask: https://en.wikipedia.org/wiki/Umask#Displaying_the_currebitlockernt_mask
- BleachBit: http://www.bleachbit.org/
- FireStarter: https://sourceforge.net/projects/firestarter/
- How to install Firestarter on Linux Mint: http://www.wikihow.com/Install-Firestarter-Firewall-on-Linux-Mint
- How to install Firestarter on Ubuntu: http://www.howtogeek.com/howto/ubuntu/install-the-firestarter-firewall-on-ubuntu-linux/
- KeePassX: https://www.keepassx.org
- How to encrypt your emails: https://emailselfdefense.fsf.org/en/
- Enigmail: https://www.enigmail.net/index.php/en/
- SELinux: http://www.selinuxproject.org/page/Main_Page
- AppArmor: http://wiki.apparmor.net/index.php/Main_Page
- Qubes OS: https://www.qubes-os.org/
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