The background:

I watch A LOT of Korean Dramas, and many from Taiwan and Japan too. The majority of them are geoblocked here, so I use qbittorrent and private tracker sites. I have never had any malware issues at all in nearly 2 years of doing this, despite monthly traffic over that time averaging close to 1TB.  

I started qbittorrent this morning, aound an hour ago, and then all of a sudden, 15 minutes ago, Windows Defender pinged 3 times saying it was removing malware and when I checked, I found that it had quarantined qbittorrent. What makes this seem odd to me is that I had not started downloading any new torrents and no torrents were active either leeching or seeding, at the time. Is there any way to determine if this is a false positive or not? 

 Here are screenshots from Defender in case they help: