Russian and Saudi Arabian telecoms companies have been targetted by a sophisticated cyber snooping operation reminiscent of the Stuxnet worm that was developed by US and Israeli government hackers to target Iran. Fiona Symon talks to Sam Jones and Hannah Kuchler how the operation - known as the Regin malware - came to light and who is thought to be behind it. For information regarding your data privacy, visit acast.com/privacy