An accessory that actually works to ward off neuroimaging surveillance.

A federal judge ruled against domestic phone data-mining.

Eight large tech companies sent a letter to the Obama administration requesting the government put new limits on its surveillance practices.

The National Security Agency is collecting almost 5 billion cellphone records daily from around the world, meaning the NSA is tracking individuals movements in ways previously unknown.

The "MythBusters" co-host talks to Marketplace Tech.

Companies are closely watching employees — tracking everything from smartphones to big-rigs.

The CIA is said to pay AT&T more than $10 million a year for access to phone records.

Apple, Inc. is trying to give customers a sense of how often governments around the world officially demand private data.

If you're a former high ranking intelligence official giving an anonymous interview bashing the Obama administration on a train, make sure no one with a Twitter account is in earshot.

Is email completely secure anywhere in the world?