About Connection Creation Limitation by Account Outside Tenant

[kensho5]

I would like to use PowerApps because it is so convenient, but I do not want to leak my company (tenant A) data to other tenants (tenant B).

Once signed in to tenant B, I can create the connection with using tenant A's credencial.
I think this is not desirable from a security point of view.

To prevent the information leaking, I would like you to implement settings that can be controlled in an easy-to-understand way for external access.

Thank you for your consideration.