|riider makes a good point. If you are looking for real-time protection to help prevent you getting viruses (rather than something you run to search for them) there are free programs which do this. |
However MalwareBytes often finds what real-time Antivirus programs miss. Right now no one program covers everything, there is need for both types. Even then some "nasties" can creep through.
Always pop back and let us know the outcome - thanks