Although you don't need to install any antivirus software on your Ubuntu machine, however out of curiosity to keep your heart and mind rest in peace, you may try out open source antivirus project ClamAV . To do that just follow the steps ClamAV can be found for Ubuntu in the apt repository. Run this command to install ClamAV: sudo apt-get install clamav If you need clamd, you may also want to run: sudo apt-get install clamav-daemon If you require support for scanning compressed RAR files you first need to enable the non-free archive, and then you can install the RAR-plugin using: sudo apt-get install libclamunrar6 After successful installation, you may try searching for it in Dash, but to your surprise there is no GUI shipped with this product, either you can run it through terminal by typing help command ( clamscan --help ) and follow the instruction's provided in the help manual (or) You may install ClamTk - A GUI prov