The National Security Agency began mining Americans' email and phone data in 2010 to map out their social connections and locations, according to The New York Times.

Lawmakers overseeing U.S. spy agencies proposed stricter limits on the government’s electronic surveillance Thursday while also calling for bolstering its authority to track terrorism suspects coming to America. Dianne Feinstein, chair of the Senate Intelligence Committee, defended the National Security Agency’s collection of phone ...

Google is racing to encrypt the torrents of information that flow among its data centers around the world in a bid to thwart snooping by the U.S. National Security Agency and the intelligence agencies of foreign governments, company officials said Friday. The move is ...

The U.S. government suspects that individuals with connections to al-Qaida and other hostile groups have repeatedly sought to obtain jobs in the intelligence community, and it reinvestigates thousands of employees each year to reduce the threat that one of its own may be trying ...

Microsoft on Friday said that a battle to shed light on secret U.S. government requests for Internet user data will play out in court after failed peace talks. Microsoft and Google filed suits in federal court in June, arguing they have a right to ...

The Obama administration's cyber operations sometimes involve what one leaked budget document calls "field operations" abroad, commonly with the help of CIA operatives or clandestine military forces, "to physically place hardware implants or software modifications."

The CIA has mushroomed into the largest U.S. spy agency, with a budget of nearly $15 billion, as it expands its intelligence, cybersabotage and overseas covert operations, secret leaked documents revealed Thursday. Former National Security Agency contractor Edward Snowden leaked the government’s “black budget” ...

For several years, the National Security Agency unlawfully gathered tens of thousands of emails and other electronic communications between Americans as part of a now-revised collection method, according to a 2011 secret court opinion. The redacted 85-page opinion, which was declassified by U.S. intelligence ...

The leader of the secret court that is supposed to provide critical oversight of the U.S. government’s vast spying programs says its ability do so is limited and that it must trust the government to report when it improperly spies on Americans. The chief ...