The New Zealand entity differs from other CERTs in other nations by having such a broad remit, however, operations manager Declan Ingram said that's useful for a country of New Zealand's size as the information for IT specialists and less-informed consumers and businesses feeds back into each other.
That information will also loop back into government agencies to help them identify areas that may be of concern to them, he said.
The new website - cert.govt.nz - gives users an avenue to report real or suspected cyber-security issues and provides advice or guidance on how to address that. Users will also be able to have the option to refer to an appropriate agency, such as police, the Department of Internal Affairs or Netsafe.
As the unit's database grows it will analyse the information to create proactive guidance and advice for users.
Industry lobby Internet NZ welcomed the launch of CERT NZ, describing it as a critical piece of security infrastructure for the country.
"Trust on the internet is something we think is very important," chief executive Jordan Carter said in a statement. "We are very pleased to see that a goal of CERT NZ is to improve cyber security in New Zealand by gaining a deeper understanding of the cyber threat landscape, avoiding incidents and reducing the impact of incidents that do happen."