Unfortunately, the relevance of the Fourth Amendment to informational privacy within cyberspace has been significantly diminished due to piecemeal legislation that has not been internally consistent and a fundamental misinterpreting of what constitutes private information. As it stands, informational privacy in the U.S. is severely lacking in constitutional protections. States do attempt to fill these holes with statutes but even then their conceptual frameworks are based on an understanding of privacy that isn't directly applicable to the digital world.

From the government. It’s a small, but important distinction.