The lure of cryptocurrency is indeed something to contend with in the face of supposedly free and powerful hardware!  This case and that of the Russian nuclear scientists are just but few deals gone bad as there're quite a number of persons out there that have gone against work ethics and turned their work place computer(s) for cryptocurrency mining. It doesn't cost a fortune to own a mining rig and their paychecks can get them one, so the crime way ought not be attractive.