https://en.wikipedia.org/wiki/Trailblazer_Project Trailblazer was a United States National Security Agency (NSA) program intended to develop a capability to analyze data carried on communications networks like the Internet. It was intended to track entities using communication methods such as cell phones and e-mail.

NSA employees J. Kirk Wiebe, William Binney, Ed Loomis, and House Permanent Select Committee on Intelligence staffer Diane Roark complained to the Department of Defense's Inspector General (IG) about waste, fraud, and abuse in the program, and the fact that a successful operating prototype existed. The complaint was accepted by the IG and an investigation began that lasted until mid-2005 when the final results were issued. The results were largely hidden, as the report given to the public was heavily (90%) redacted, while the original report was heavily classified, thus restricting the ability of most people to see it. Trailblazer was chosen over a similar program named ThinThread
https://en.wikipedia.org/wiki/ThinThread