Technology plays an increasing role in Homeland Security efforts, spawning a growing U.S.industry for everything from biometrics to cargo screening at ports.

The air travel system remains one of the most high-profile targets for terrorists. This backgrounder examines efforts to improve aviation security since the 9/11 attacks.

The “war on terrorism” is often portrayed as playing out on the streets of Baghdad or in the mountains of Afghanistan. But New York City is another important battleground and could provide lessons fo…

Counterterrorism agencies in the United States proudly point to the lack of a “second 9/11 attack” in response to critics of their methods. Here’s a look at the continuing debate over the proper orga…

A United Arab Emirates-owned company is set to take control of terminals in six major U.S. ports, raising questions about security.