Wider surveillance will not prevent terrorism

New Zealand's security and intelligence agencies have been at the centre of scrutiny in the aftermath of Christchurch Mosque attack. Questions have been raised as to whether the NZSIS and the GCSB were too focused on threat of Muslim extremism, and as result, overlooked the rise of white supremacy and far right radicals on our shores. Opposition leader, Simon Bridges has called for the reconsideration of Project Speargun - a previously proposed cyber-defence system which some critics said was mass surveillance regime. But an expert in surveillance and counter-terrorism has warned that broadening the scope of surveillance not only encroaches on individuals civil liberties, but actually inhibits intelligence services to accurately identify and act on threats. Reinhard Kreissl is the Chief Executive of Vienna Centre for Societal Security Research and joins Karyn to talk about his research.