National Security Agency

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National Security Agency

National Security Agency

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Text Top Secret typed on retro typewriter

How Secret Is Top Secret?

Close up of a hand placing a ballot in a ballot box. Election vote voter voting

Have Any U.S. Presidents Decided Not to Run For a Second Term?

Washington, D.C. locator map.

What State Is Washington, D.C. In?

The United States Supreme Court building, Washington, D.C.

14 Questions About Government in the United States Answered

Bar graph of the United States Death Toll during major events. Infogram chart.

U.S. Death Toll During Major Events

Discover

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10 of the World’s Most Dangerous Fish

Groups of depositors in front of the closed American Union Bank, New York City. April 26, 1932. Great Depression run on bank crowd

Causes of the Great Depression

Currency. Money. Cash. Dollars. Bills. Pile of ten, twenty, fifty, and hundred dollar bills.

6 Questions About the History of Money and Banking Answered

Battle of the Alamo from "Texas: An Epitome of Texas History from the Filibustering and Revolutionary Eras to the Independence of the Republic, 1897. Texas Revolution, Texas revolt, Texas independence, Texas history.

6 Wars of Independence

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The Seven Sacraments of the Roman Catholic church

Nazi Germany, Nazi SS troops marching with victory standards at the Party Day rally in Nuremberg, Germany, 1933. (Schutzstaffel, Nazi Party, Nurnberg)

Why Was Nazi Germany Called the Third Reich?

Lusitania sinking, illustration from The War of the Nations (New York), December 31, 1919. World War I, WWI. This image is one of three on the page. (See source file for the other two.)

7 of the World’s Deadliest Shipwrecks

National Security Agency: Facts & Related Content

Written and fact-checked by The Information Architects of Encyclopaedia Britannica

News •

Countries shore up their digital defenses as global tensions raise the threat of cyberwarfare • Apr. 20, 2025, 8:24 AM ET (AP)

China pursuing 3 alleged US operatives over cyberattacks during Asian Games • Apr. 15, 2025, 6:05 AM ET (AP)

Trump administration task force to consider declassifying COVID-19 origins materials • Apr. 10, 2025, 4:35 PM ET (AP)

Trump abruptly fires the 4-star general who headed the National Security Agency • Apr. 4, 2025, 6:50 PM ET (AP)

Judge blocks firing of intelligence agency employees who worked on DEI programs • Apr. 1, 2025, 4:51 PM ET (AP)

Facts

Also Known As	NSA
Areas Of Involvement	intelligence • cryptography • communications intelligence • national security • PRISM
Related People	Agnes Meyer Driscoll • Edward Snowden • Condoleezza Rice • Ivan Sutherland

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National Security Agency

National Security Agency

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Topics

Central Intelligence Agency National Aeronautics and Space Administration KGB Federal Bureau of Investigation MI6 Mossad U.S. Secret Service U.S. Department of Defense Environmental Protection Agency Indian Space Research Organisation

Demystified

Text Top Secret typed on retro typewriter

How Secret Is Top Secret?