The watchdog has barked - at long last. No longer is it an inoffensive pooch whose mutterings could be easily dismissed or simply ignored. The hound is now displaying some real teeth. And the Prime Minister may yet be the one who ends up getting badly bitten.
Cheryl Gwyn, the inspector-general of Intelligence and Security, has been in the job for little over three months. On her appointment to the long-standing and recently beefed-up oversight role, she set an objective for her three-year term: restoring public confidence that the Security Intelligence Service and its sister agency, the Government Communications Security Bureau, were truly subject to rigorous scrutiny and were not breaking the laws under which they operate.
The highly experienced lawyer could never have envisaged the SIS's handling of an Official Information Act request from an Auckland-based blogger being the first test of just how serious she is in seeking such a transformation.
Given it is always easier to get blood out of a stone than meaningful information out of the SIS or GCSB, the rapid and positive response to Cameron Slater's request for politically sensitive material of potential embarrassment to former Labour leader Phil Goff - as detailed in Nicky Hager's Dirty Politics - was puzzling and disturbing.
It was disturbing because Slater undisputedly got preferential treatment, receiving the material before journalists who made similar OIA requests.