The New Zealand Centre for Critical Infrastructure Protection (CCIP) is a government agency charged to...
... provide a public-private partnership and centralised platform for the exchange of sensitive and/or relevant Internet and Information Systems related security information among key government and Critical Infrastructure (CI) providers to enable critical information infrastructure protection (CIIP).
Of note are the advisories that are provided, as well as various publications relating to information security.
http://www.ccip.govt.nz/