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Nurse killed after allegedly using personal alarm to call for help.

Department of Homeland Security Secretary makes her case for effective and efficient progress to protect the southwest U.S. border. Read her Monday speech and comment on it.

Dugway Proving Ground locked down when a vial of VX nerve agent went missing.

It is now a question of how secure are smart cards as some firms indicate ways to overcome the barriers.

After criticism of the lack of effectiveness of the color-coded alerts and a need for better information of specific threats, the Department of Homeland Security shifts gears.

Poorly maintained equipment the case of the loss of 29 lives in West Virginia.

Off the shelf gear can allow thieves to steal cars with keyless entry.

There is a lack to identify workers at some seaports.

New Fatwa aims at encouraging Americans and Westerners to support violence through donations.