From memory, Comodo is made by the same company as AVG but it has some extra or something. My friend who is a computer tech hadn't heard of it either, but when he put both malware bytes and superantispyware on my computer, they hardly picked up anything - so it does a good job. I like Malware bytes as well as superantispyware, but I still had the setup for the second on my computer, so I used that one. I haven't found anything on a scan, but it is good to hear that it is probably from a webpage.