“Malware creators are always one step ahead of the tools designed to stop them. Once malware is discovered, it takes time for anti-malware tools to be updated. There really is no “best” anti-malware package. Who is “in the lead” changes often, and any tool can miss something. Of course, no tool can protect you from yourself. Use up-to-date security software, follow best safety practices, and back up regularly.”
Go to (110) I Run Security Software. Why Do I Still Sometimes Get Infected? – YouTube for the description.