This is a HUGE topic, but perhaps I can start off, as I typically do, with an analogy.
Astrology is like cat sitting.
Someone is giving the keys to their house to you whenever they give you their birth information. Everything that is important to them is going to be accessible by another human being.
I don’t blame politicians for being wiley with their birth info. No electioneering compares with the power of the astrologer. Reagan knew it.
Considering the house analogy, an astrologer can go into the basement, into the bedroom, into the bathroom chest while the client isn’t looking.
Everything can be known just from the chart.
But there is a job to do, and you must do it and don’t veer from it.
So that is why the ethics of the astrologer is PARAMOUNT.
The astrologer must be ethical, upright, and utterly dependable in these things. This in fact is the first criterion of an astrologer.
I am that.
Do not do astrology if you can not stand up in these virtues and do not consult an astrologer if they can not.