Hello!
I have a question regarding quarantine aware app. I know Safari is one, but I don't like it very much.
Does Opera support this function?
https://support.apple.com/en-us/HT201940
[Mac OS X Snow Leopard v10.6 and later also check for known instances of "malware", or malicious software. When you open a quarantined file, OS X checks to see if it includes known malware. If so, an alert message similar to the following appears:]