The pact would promote information-sharing, and it would set up a cyber hotline and working group between the two countries to foster cyber security cooperation.

U.S. border agents are allowed to search a traveler’s laptop, cellphone or other electronic device and keep copies of any data on them based on no more than a hunch, according to an internal study from the Homeland Security Department. 

The Foreign Intelligence Surveillance Act (FISA) cannot be challenged by Americans without proof that the law would directly affect them, the Supreme Court rules. 

Cyber attacks originating in China have been discovered to spy on economic efforts at U.S. businesses, especially those in finance, technology and aerospace.

Los Alamos nuclear research facility has replaced several components of switches made in China for the sake of security concerns. 

The Chinese telecom company is facing fears of both equipment vulnerabilities and national security threats as it seeks to expand its business to Australia, the UK, India and the U.S.

A former security officer at a U.S. consulate in China pleaded guilty to attempting to pass secrets about the building's security systems to a Chinese spy agency. 

Background checks on U.S. citizens attending flight school are delayed until the student applies for a pilot's license, causing worries about homegrown terrorists. 

U.S. Homeland Security Secretary Janet Napolitano said she would consider having tech companies partner with the government to combat foreign-based attackers.