Hi Mudasir. I'm Greg, an installation specialist, 10 years awarded Windows MVP, and Volunteer Moderator, here to help you.
It isn't the torrent client that's so dangerous, it's the torrents themselves which are often riddled with malware, adware or spyware. This is because of torrents being in part a pirates market where anything goes.
So if you download anything with a torrent client, be sure to immediately scan it with the most powerful free scanner out there Malwarebyes from https://www.malwarebytes.com/mwb-download/. Enable Root Kit scanning in it's Scan Settings, once installed you can also turn off it's Real Time Protection since Defender is enough, so it's only needed for it's scanner. It will also be on your right click menu to easily scan any downloads on the spot.
If you download a lot of torrents I'd also install and run scans with AdwCleaner from http://www.bleepingcomputer.com/download/adwcle... which covers some adware that Malwarebytes doesn't.
I hope this helps. Feel free to ask back any questions and keep me posted. If you'll wait to rate whether my post resolved your problem, I will keep working with you until it's resolved.
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