Today's verdict, delivered by a full bench of the court, was the latest step in a long-running saga for former Fairfax Media technology journalist Ben Grubb.
Back in 2013, he had asked Telstra for access to the metadata that the telco was retaining about him, and that it would hand over to government agencies. His request was knocked back by Telstra's privacy department.
Grubb then made a complaint to the Australian Privacy Commissioner Timothy Pilgrim. He obtained a favourable ruling, with Pilgrim deciding that the telco had got in the way of his privacy by refusing to hand over the metadata.
The case hinged on whether the information Grubb was seeking was about him, or about the service that Telstra was delivering to him.
The telco had refused to hand over IP addresses, URLs visited, locations of mobile towers used, and inbound call data, as it said this did not fall under personal information.