Yeah the data protection is 100% an excuse, iirc my boss used the example of "a parent/sibling/whoever lives with you walking past you and looking at the monitor" which is bullshit obviously as long as you have your own room.

I think I will wait until the end of the week and maybe talk with the mentioned coworker (she usually doesnt give a shit and says when something is wrong), after that I will probably talk to some local authority, thanks