Used to be OK
I have been using this app for some time now, but the virus list update that occurred sometime after the 13th of November (the last time that I successfully used v3.7) has caused the app to hang up when it get to the webbookmark files in the Library/Cache/Metadata/Safari section. This started on the 27th of November. I tried several times and it always hangs there (which is to say that the app apppears to be scanning the same file for hours, as evidenced by the elapsed time ticker grinding on), albeit on different files. When I reported this, Bitdefender just used a stalling tactic (or prehaps it was canned SW replying to my report). For example, they wanted a screenshot - of an app that is hung-up. That would look the same as a screenshot of a perfectly functioning app.
I understand the app is free so I got what I paid for - but they have tarnishd their brand. It should be easy to replicate the problem at their end - the only issue is the current threat list. So I have switched to another virus scanner for now. I will note that scanner detected a lot of malware that apparently skated by Bitdefender.
Chuck Ef about
Bitdefender Virus Scanner, v3.7