Department of Defense

Transparency Project

Department of Defense

The Department of Defense, also known as the Pentagon after the building in which it is headquartered, is the federal agency responsible for national security and the United States armed forces. It is the largest employer in the world, claiming more than 3 million workers; the Pentagon, in turn, is the largest office building in the world. The Department of Defense is also the federal agency with the most budgetary resources, and regularly accounts for more than half of the United States federal discretionary budget. In 2007, EFF sued the Department of Defense for information about its use of national security letters to gather intelligence within the U.S.

Stay in Touch

NSA Spying

EFF is leading the fight against the NSA's illegal mass surveillance program. Learn more about what the program is, how it works, and what you can do.

Follow EFF

Celebrate the 4th by giving to EFF! We're fighting to stop mass surveillance in the US and worldwide. https://eff.org/EFF25

Jul 4 @ 5:36pm

A deep dive into XKEYSCORE, one of the NSA's creepiest spying tools: https://eff.org/r.c6hp

Jul 3 @ 3:12pm

Come to EFF HQ on July 8 for a book talk with author of "Geek Heresy: Rescuing Social Change from the Cult of Tech" https://eff.org/r.i3fv

Jul 2 @ 4:57pm
JavaScript license information