Prime Minister John Key says he had no reason to believe there were issues with the national spy agency until faults were revealed after the raids on the mansion of internet mogul Kim Dotcom.
Mr Key told TVNZ's Q+A programme today that he was committed to restoring public confidence in the Government Communications Security Bureau following the early release last week of a damning independent review of the spy agency.
He rejected calls for the GCSB to be ditched because "we need to make sure that for national security reasons this organisations operates".
Mr Key, who says new legislation and other operational changes will result from the review, hit out at the "very, very highly critical claims being made [and] personally directed at me" in connection to issues with the GCSB.
Mr Key claimed there was unbalanced reporting by some media covering Ian Fletcher's appointment as head of the GCSB.
Opposition parties criticised the Prime Minister who was revealed to have urged Mr Fletcher, a childhood friend, to apply for the top job.