Can you please review why below domains got blacklisted by Avast? I see there are many end users who reported the same issue in Korea. img*.daumcdn.net are sub-domains in Korea’s portal site which is https://www.daum.net/ so the impact would be critical.
Thanks for the update. I’ve done it already and waiting for a reply. You may check below link to see how many end users reported the similar issue in the portal. (You can use Translate to English in the right mouse button)