Do you mean Transmission the open source BitTorrent app for macOS? What’s the problem with it?
The tainted packages installed a ransomware application (a variant of Linux.Encoder.1, but recompiled for Mac, known as KeRanger) that encrypts the user's files and attempts to force users to pay.. The developers were not complicit in the hack that affected their software; but I included it because the point I was trying to make was that hackers are aware and targeting apps popular among developers.