The infamous case of the Golden State Killer wrapped up last month when former policeman Joseph James DeAngelo was arrested for a series of 30-year-old murders and assaults. The police were able to identify him through the use of a public genealogy database intended for building family trees — it was a victory for justice-seekers, but is this ethical policing? Should we be concerned about the privacy of our DNA data?

Tess spoke to Professor Dennis McNevin, Professor of Forensic Genetics in the Centre for Forensic Science at the University of Technology Sydney about this challenging dilemma.