Unlike all the full-fledged antivirus software, this one is not only smaller in size, but it is also portable, meaning that you can carry it on your USB removable device and run it whenever you want to work on a PC. And if you want to choose an alternative to all the popular security solutions out there you can try S.O.S.
Keeping the computer malware-free is by far the most important job for every PC user out there.