What is the difference between ESET Online Scanner and ESET Smart Security/ ESET NOD32 Antivirus?
ESET Online Scanner is a program which runs from your web browser, checks for and (optionally) removes malware. It is not configurable, and cannot prevent your computer from being infected by malware. ESET Smart Security and ESET NOD32 Antivirus are ESET’s anti-malware programs, which are highly-configurable, offer multiple layers of protection against malware and can prevent your computer from being infected.