On this week’s Cyber Security Brief podcast, Brigid O Gorman and Dick O’Brien discuss a recent blog we published on the Witchetty (aka LookingFrog) espionage group, which has been progressively updating its toolset, using new malware in attacks on targets in the Middle East and Africa, including a new tool that employs steganography. We also discuss the recently discovered Microsoft Exchange Server zero days, the U.S. defense sector being targeted by multiple APT groups, and a newly discovered espionage actor called Metador, which was spotted operating in recent weeks. We also discuss the breach of Australian telecoms giant Optus, and some new information that has emerged about the takedown of the REvil/Sodinokibi ransomware gang.