On this week’s Cyber Security Brief, Brigid O Gorman and Dick O’Brien discuss some of the research published by Symantec’s Threat Hunter team over the past couple of weeks, including a new Cicada/APT10 espionage campaign targeting government organizations and NGOs in multiple countries worldwide. We discuss the new Verblecon malware, which is being deployed in sophisticated campaigns that appear to have the relatively low-reward goal of cryptocurrency mining as their main objective. We also talk about the Spring4Shell vulnerability that briefly caused a lot of consternation last week, and give an update about the latest information that has emerged about the cyber activity that has been seen targeting organizations in Ukraine.