How to protect account for getting banned after selling/buying it

Good day.

I would like to ask, what are the best and easiest way to protect an account getting banned after it's been sold or bought? What can be done to reduce the chances of getting it detected? Account sharing is not a bannable offence itself, but let's say "giving an account away because of quitting" is?

And also what can be done after it's detected? (Meaning this


All answers and helps are appreciated. If I posted this into wrong part of the forums sorry, I'm pretty new to Sythe.