Government Communications Security Bureau investigated

Updated at 9:39 am on 25 September 2012

Originally aired on Nine To Noon, Tuesday 25 September 2012

With Paul Buchanan - Security and Intelligence Analyst, and Nicky Hager - Investigative Journalist and Author, whose 1996 book "Secret Power - New Zealand's role in the international spy network" detailed the surveillance system, ECHELON, used at the Waihopai spy base, and the role of the Government Communications Security Bureau (GCSB).