I came to know that one must never share any API’s that one has got from any API providers(consider GEMINI API) with others.
I also came to know that sharing APIs with others invites risks of personal data that are not at all included in my program getting exposed and that one can easily hack and take all my data in my PC.

So having said, how far are those above said true??
How come 3rd party having my API can access my personal data on my PC which I haven’t used in my programming???How can they access my Hard Disk Drive??

So I want to know the answer for the above question with a detail explanation of how APIs communicate between client and servers and that how can 3rd party invade my privacy by knowing my API that I use in my program?????