Sen. Ron Wyden said in a letter that one U.S. phone carrier turned over Senate data to law enforcement without notifying the ...

AT&T says that since the start of its current contract with the Senate, which began last June, it has not received any legal ...

Senator Ron Wyden scribed a letter accusing major phone carriers including AT&T, Verizon and T-Mobile of "failing" to address ...

Sen. Ron Wyden (D-Ore.) said Wednesday that three major phone carriers failed to establish systems to notify offices about ...

In a letter to fellow senators, the Oregon Democrat alleged that carriers had failed to properly warn lawmakers about surveillance requests.

AT&T noted that in 2011, it rejected an average of 18 surveillance requests a week for wiretaps and for subscriber call data.

including AT&T, Sprint, T-Mobile and Verizon. The number of requests addressed by the study - the first time law enforcement's cell surveillance has been studied at a national level - surprised ...

Of those 301,816 requests, AT&T challenged 3,765 requests and provided ... containing content under the Foreign Intelligence Surveillance Act, affecting at least 35,000 user accounts, AT&T said.

The No. 2 U.S. mobile operator made the request in a December 5 letter ... The more significant public debate is about government surveillance practices, AT&T; said, and noted it and other ...

AT&T's surveillance system is said to follow a ... In the aftermath, the Electronic Frontier Foundation launched lawsuits and FOIA requests for further details on Hemisphere, targeting both ...