Ubuntu – only install from official repositories
As you probably know there is a trojan running around that is installed via screen-saver via a .deb install. More here and here.
The safest way to install anything on your machine is via the Official Repositories using apt-get, Synaptic or Ubuntu Software Centre. If you do need to install anything that is not in the Official Repositories, then make sure it is from a Repository you know and trust. This also go if you install via .deb, ensure you know where that .deb comes from.
Ubuntu is getting famous and popular so it is getting attacked just like Windows. There is however one different thing in Ubuntu, those attacks need the assistance of the user to be installed so be careful what you install.
Technorati Tags: screensaver, ubuntu, trojan