Because of the high-profile New Zealand domain names,such as Coca-Cola.co.nz and F-Secure.co.nz,which had been recently attacked,Domainz,the registrar record for these domains is believed to be guilty.
Many registries subscribed to EPP,which is a flexible protocol that enables communication between domain name registrars and domain name registries for transferring, registering, renewing and managing domain names.Therefore,the hackers took advantage of the fact that if the internal networks of domain name registrars are compromised,these protocols can be used to easily update domains names and redirect website traffic to any site.
This is a risk that highly-trafficked sites will continue to have if domain name registries and domain name registrars won't start to work together to identify methods for improving the security of all domain names.