prism surveillance program

Federal prosecutors defended Wednesday their use of information gathered by the NSA to pursue a domestic terrorism suspect, in a first-of-its-kind case that requires U.S. appeals judges to weigh how the fruits of a pair of surveillance programs can be used in criminal cases.

In a public appearance in Baltimore on Thursday, National Security Agency director Keith Alexander forcefully defended surveillance methods that have come under scrutiny this year but acknowledged that some of them may need adjustments.

A police surveillance program that records the license plate numbers of millions of cars traveling on Maryland's roads every year raises serious privacy issues

As you move through the ordinary activities of your everyday life, you're leaving an electronic trail rich in data about your whereabouts, your interests and your relationships. That's information of keen interest — and not only to marketers. As recent revelations about two National Security Agency surveillance programs show, at least some of those digital details are being collected and analyzed by the government.