Our current system of accountability for intelligence agencies is broken, and hopelessly inadequate for an era of mass surveillance.

Here's why. Vivienne Thom is the "Inspector-General of Intelligence and Security", whose role, the Inspector-General's office maintains, is to provide "independent assurance for the Prime Minister, senior ministers and Parliament as to whether Australia's intelligence and security agencies act legally and with propriety by inspecting, inquiring into and reporting on their activities." [my emphasis]