I’m not a lawyer, but I’m curious about how such situations like this are handled legally. Seems that personal data should be handled as if it’s your own (golden rule) and that allowing others to access it without consent is akin to sharing a secret. Such a secret, in my opinion, constitutes a form of intellectual property and therefore facilitating unauthorized access would be akin to larceny. Does this make sense? Please feel free to enlighten ne otherwise.
What's preventing companies from forcing you to give them rights over such "secrets" as a condition of using the app? Companies already do this all the time, by forcing you to give them a non-exclusive, worldwide, irrevocable, royalty free license to whatever content you upload to their service.