A special federal court that oversees domestic surveillance has raised concerns about the National Security Agency's collection of certain types of electronic data, prompting the agency to suspend collecting it, U.S. officials said.
The Foreign Intelligence Surveillance Court, which grants orders to U.S. spy agencies to monitor U.S. citizens and residents in terrorism and espionage cases, recently "got a little bit more of an understanding" about the NSA's collection of the data, said one official, who spoke on the condition of anonymity because such matters are classified.
The data under discussion are records associated with various kinds of communication, but not their content. Examples of this "metadata" include the origin, destination and path of an e-mail; the phone numbers called from a particular telephone; and the Internet address of someone making an Internet phone call. It was not clear what kind of data had provoked the court's concern.
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