The bill extends the powers of the GCSB to private sector cyber security when national security interests apply, not just Government Communications. It allows the GCSB to spy on New Zealanders in some circumstances, including when an agency with a warrant such as the SIS or the police seeks the assistance of the GCSB, and when the GCSB is conducting its cyber security functions under the act - such as working out if a particular cyber system is under attack from abroad or being spied on.
Act leader John Banks sits on the committee and yesterday Parliament agreed to replace United Future leader Peter Dunne with senior National minister Tony Ryall.
Mr Dunne resigned as a minister a week ago after being identified as the main suspect as the leaking of a report on the GCSB.
Opposition leader David Shearer and Greens co-leader Russel Norman sit on the committee too.
The committee must report the bill back to Parliament by July 26.
A companion bill to the GCSB amendment bill, the Telecommunications (Interception Capability and Security) Bill, is before the law and order select committee. Submissions on it closed yesterday and after public hearings and consideration it must be reported back to Parliament by September 20.