I stumbled on a forum once where it was just filled with people trying to modify the software for various laptops to disable the "tally lamp" (as it is called). There were people selling the mods and one guy claiming he was selling his cracks to three-letter agencies. The people on there seemed to be using this to extort people (mostly women) by being able to record videos without the owner knowing. Some really dark shit.

Yeah the first day I read about RATers... jesus. The camera LED seemed to be a major thing for them, because if they could bypass it then the chance their RAT would be discovered was much lower.

Really nasty world they've made for themselves, blackmailing, extorting and generally controlling other people (mostly women and girls, but some men too) with threats of releasing compromising material.