Is there a catchy expression for the fact that in the future all data that we believe private will probably be public? Give it a few more security breaches..
I would nominate "data apocalypse" based on the literal meaning of apocalypse (disclosure), but it seems others have already coined the phrase for various other events.
Even in absence of any security breaches, all currently used encryption is practically assured to be broken with the advances of technology. That LastPass app is so convenient, it stores your passwords in the cloud "securely encrypted". But all your secrets are going to spill in ~50 years.