Schools and corporation do this all the time for theft Reaction (take a photo of the thief with out them knowing), it is a feature they want, Some Schools have gotten in trouble for turning it on and catching children in the rooms
>Lock computer with a password of your choosing and show a message on the computer. The youtuber says it's for ransom.
Again, legitimate Theft Reaction
> Swap mouse button functions ..Open CD tray
Is that malicious, really. Enough for jail time
>* Keylogger
Plenty of Corporations have keyloggers on their systems, some corporations even go as far as 24/7 keylogging and screen recording while the system is on.
>>* Send SYN floods from all your controlled computers
That one you may have a case for... the rest all have legit purposes used today by Enterprises worldwide