Here is the related URL link:
clients1.google.com/tbproxy/af/query/client=Google%20Chromel{gzip}
What should I do? I suppose this is not a malware… BUT avast reports this same issue very often by prompting window in down-right corner.
If I compare the link in this thread https://forum.avast.com/index.php?topic=197571.0. with opera browser, from the URL, I am thinking of sth ugly…