Last week missing Belgian backpacker Theo Hayez's father made an emotional plea to Whatsapp to release his missing son's data.
But the messaging service uses end-to-end encryption which appears almost impossible to decode.
We investigate the opaque world of end-to-end encryption and shine a light on the pros and cons of the messaging services - particularly for minors.
Professor Katina Michael - Faculty of Engineering and Information Sciences University of Wollongong
Associate Professor Vanessa Teague - School of Computing and Information Systems at The University of Melbourne
Presenter Hugh Riminton
Producer Skye Docherty
Citation: Katina Michael, Vanessa Teague with Hugh Riminton, June 23, 2019, “WhatsApp Encryption and the Missing Belgian Backpacker”, RadioNational: Sunday Extra, https://www.abc.net.au/radionational/hugh-riminton/9355968; https://www.abc.net.au/radionational/programs/sundayextra/8.45/11225548