Since December 2012 she has served as the Independent Reviewer of Adverse Security Assessments, analysing reports of refugees identified as security risks.

As IGIS, Ms Stone will be responsible for reviewing the activities of Australia’s six intelligence agencies, including ASIO, the Australian Secret Intelligence Service, Australian Signals Directorate, Australian Geospatial Intelligence Organisation, Defence Intelligence Organisation and the Office of National Assessments.

Late last year the IGIS’ department announced a recruitment drive to increase its oversight capabilities after ASIO was granted new powers to monitor telecommunications. 

Ms Stone replaces outgoing Inspector-General Vivienne Thom, who will finish her term on 19 July.

For over 10 years before becoming a judge, Ms Stone was a partner at Herbert Smith Freehills in the areas of commercial property, infrastructure development commercial financing and taxation.

After her retirement from the court, HSF announced she would return to the firm as a consultant.

Aside from a Bachelor of Laws from ANU and a Bachelor of Arts from the University of Sydney, Ms Stone holds a Master of Laws from Yale Law School.