ESET Nod32 and Smart Security are excellent security software. Out of the box it will protect you, as long as you're not an ignorant Internet user who dismisses security warnings etc. Unlike Nod32, Smart Security also comes with Anti-Theft. You can log in to your ESET account here,
https://my.eset.com/
You can customise ESET to detect PUP/PUA (Potentially Unwanted Applications), here's how:
http://kb.eset.com/esetkb/index?page=content&id=SOLN2629