Federal immigration agencies are using a vast surveillance network in Minnesota – from facial recognition technology to ‘stingrays’ that collect data by impersonating cell phone towers.

Federal immigration enforcement officials are using a growing arsenal of surveillance tools to track immigrants and protesters, including facial detection apps and databases, cellphone trackers and ...

The New Jersey State Police have spent at least $850,000 in recent years on a technology that allows troopers to track cell phone use without phone owners knowing, according to documents provided ...

The investigation of that homegrown plot to kill police officers in Boston continues, but this much we know &#8212 without extensive cell phone surveillance, the suspects would probably have gone ...

The Electronic Frontier Foundation (EFF) has created Rayhunter, a $20 device that helps people detect if police are using ...

For years, immigration enforcement agencies have been using invasive cell phone surveillance technology known as Stingrays in near-total secrecy. To find out more, the ACLU and New York Civil ...