The National Security Agency is deleting years' worth of call records collected for foreign intelligence purposes, saying that “technical irregularities” resulted in the spy agency collecting data it was not authorized to receive.
The NSA issued a statement Thursday revealing that the spy agency started deleting all so-called “call detail records” collected since 2015 in May of this year.
Call detail records, or CDRs, are obtained from telecommunications providers and contain the numbers and time and duration of phone calls, not the content of the calls themselves. The NSA is authorized to collect the data under the Foreign Intelligence Surveillance Act.
“NSA is deleting the CDRs because several months ago NSA analysts noted technical irregularities in some data received from telecommunications service providers,” NSA said. “These irregularities also resulted in the production to NSA of some CDRs that NSA was not authorized to receive.”