Hello ,
Thanks for the ask & welcome to the Q&A .
The data share just lets the other party know that you are ready to share the data . You do have an option to call out of anything important when you set up the data share when you add content for "Terms of use " . On the destination side , you ultimately copy the files to a container and distination account owner can set up access control on the files/folder .
Thanks Himanshu
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