supersecrecy

noun

su·​per·​se·​cre·​cy ˌsü-pər-ˈsē-krə-sē 

: the habit or practice of maintaining a very high level of privacy and concealment : extreme secrecy

The $18 billion federal agency … was the embodiment of supersecrecy.

—Richette L. Haywood

The company's Kremlin-style culture of supersecrecy is part of the legacy of Steve Jobs, who was obsessed with keeping Apple product development far from public view.

—Therese Poletti

Word History

First Known Use

1915, in the meaning defined above