In this week’s Cyber Security Brief, Dick O’Brien and Brigid O Gorman discuss the recent in-depth whitepaper the Symantec Threat Hunter team produced about Chinese cyber-espionage activity, which details the most active groups operating out of that country at the moment, as well as the tactics, tools, and procedures they leverage, the custom malware they use, and who their victims tend to be. We also talk about recent warnings from U.S. authorities about North Korean nationals posing as citizens of other countries to gain employment, and threats from the Conti ransomware gang to “overthrow” the government of Costa Rica.