Unless he cracked it himself, he wouldn't know for a long time if the cracks were malicious or not. When I found an uploader that had so much working software even the smaller more obscure and niche stuff, I tried to stay with him..Eventually I did malware analysis (hobby at the time) and found out he was binding his password manager stealer to the main program or some necessary .dll that was called my the main program.

That was on IPTorrents private tracker, and he was incredibly highly regarded.

I cum in my pants thinking about the number of different accounts he stole over all those years. I was able to access a similar dumb via ftp and hardcore username and password in the downloader, but that uploader has his bound file so crazy hidden.

The rest was high me writing a story about what your coworker could have been doing, Office Space style.