While I am keeping an open mind until I know the details, I would need a lot of justification for the need to go to this level in hunting down the leakers (or is that 'whistleblowers' ??)
http://www.abc.net.au/news/2016-08-24/afp-secretive-raid-in-parliament-house/7781432
The hunt for those who leaked information from within the National Broadband Network is one of the most politically charged investigations in recent times.
When news broke this morning that police would be executing a search warrant at Parliament House, a Kafkaesque situation was triggered underneath the building.
Two plain-clothed AFP investigators arrived at the lower entrance, where they were met by staffers of former Labor communications spokesman Stephen Conroy.
A sizeable contingent of radio, television and print reporters and crews shadowed the group as they entered the basement.