The changes focus on stepped-up intelligence sharing. They also attempt to address concerns that arose after new airline security measures were put in place in January.
More than 30 US governors have received subtly threatening letters from a group called Guardians of the free Republics. Investigators fear the broad call for removing top state officials could inspire others to act out violently.
The Moscow subway attack Monday highlighted gaps in security. But several new technologies and practices can make subways and mass-transit stations significantly safer, experts say.
As nuclear safety concerns rise, the US government is building a stable of nuclear detectives – offering summer internships to those interested in radiochemistry nuclear forensics.
The virtual border fence was supposed to revolutionize US-Mexico border security. But delays and glitches led Homeland Security Secretary Janet Napolitano to freeze its funding Wednesday.
President Obama has nominated Robert A. Harding, a retired two-star general with an Army intelligence background to lead the TSA, which is responsible for US airport security.
At the RSA security conference Tuesday, the White House declassified cybersecurity plan when Obama administration cybersecurity czar Howard Schmidt revealed 12 broad elements of the 2008 Comprehensive National Cybersecurity Initiative.
Thousands of civilian aircraft fly within the general aviation system every day. But there are few regulations, laws, or security procedures that would prevent a pilot with ill intentions from using a plane for evil purposes.