A huge security breach

Stuff reports:

More than 100 people – including white supremacists, Muslim converts and people left disgruntled by the Christchurch terror attack – are being actively monitored by police.
Stuff has obtained part of a top secret list that names those who are of concern to police following the March 15 terror attack. Stuff has chosen not to name anyone on the list or contact them for security reasons.

This is a huge security breach. The list of people under surveillance by the Police as potential security risks should be held incredibly tightly. How it could end up (in part) in the hands of the media must be answered.