BitTorrent app Transmission once again source of macOS malware

Once again, BitTorrent client Transmission has distributed malware to some users through an altered installer, with downloaders of the software on Aug. 28 and 29 probably infected by the “Keydnap” package.

The previous version of Keydnap required users to click on a maliciously formed file, which then opened the installer in Terminal. The malware then waited to install until the next app was launched, and popped up a dialog box asking for authentication.