Too many idiots are ignorant of I.T and it's capablities or the way data can be used.
This is an unfortunate consequence of putting networked Personal Computers onto the desks of low grade staff.
When confidential data was on 'Data Centre' computers, the data was only handled by 'computer professionals' who realised the value off and consequences of mishandling data.
Also in those long gone 'Data Centre' days, being a 'computer operator' required training and knowledge.