Pen testing is a pretty big industry. I've used a handful of RATs for different purposes including at least one which was professionally developed and purchased

Pen testing is a pretty big industry. I've used a handful of RATs for different purposes including at least one which was professionally developed and purchased (through my employer anyway) I'll add however I've seen more than one sketchy dev hide behind the "It's just server admin software" angle. I'm not familiar with the software from TFA so I can't comment where that one stands.