It's an app that can integrate with a lot of streaming services(officially) and has a built-in torrent client(that does nothing). (You know, all of this so that they can be accessible on all platforms, etc. torrenting isn't viewed kindly by platform makers) With the help of third party plugins (such as Torrentio) stremio now has access to systems where you can integrate with torrent sources so that when you browse for your movie, you can also see torrent sources and with the help of the built in torrent client, you can also stream them. Stremio has casting support and apps for all devices, even TV. It makes it really easy to watch movies easier and in better quality than any streaming service. It also keeps track where you last were in your movie so you can resume, the same thing for shows, also has many other useful extensions that streaming services don't support, such as Trakt.tv integration, or browsing curated lists of movies and shows from anywhere, as well as integrating with other sources outside of torrents such as providers holding archived materials.
Using a torrent plugin without a debrid service has the usual torrenting issues. In some countries torrents are monitored by copyright holders, so in NA getting letters from the ISP for copyright infringement is an issue. In Germany torrentio is a great way to receive a few hundres to thousands euro fine.
By using a debrid service it's a pretty good experience (if your watching in english, as other languages are often not well represented on public trackers).
If you mean about getting torrents that could be viruses the way it works I donât think that would be an issue but they might have stuff in play to make it that way.
Given the torrents nor files are ever on your computer I canât see it being problematic. Unless itâs possible to stream a video via torrent and that torrent somehow injecting bad code in.
Though another advantage to debrid is that majority of the content is cached due to the amount of people using it. So bad torrents would very likely not stay cached long but it could be an issue with more niche content maybe?