The US National Security Agency (NSA) collected over 530 million records of phone calls in 2017 more than triple gathered a year before, an intelligence agency report shows.
The call detail records, which were collected under Foreign Intelligence Surveillance Act (FISA), include the numbers and the time and duration of the phone calls, but not their content, showed the report released by the Office of the Director of National Intelligence on Friday.
According to a spokesman for the office, the NSA had discovered that some factors can affect the number of call records collected and that the agency expects them to “fluctuate from year to year.”
“The government has not altered the manner in which it uses its authority to obtain Call Detail Records pursuant to the FISA. Rather, the NSA has found that a number of factors may influence the number of Call Detail Records that NSA receives,” said Tim Barrett.
“These factors include the…