Symantec, a subsidiary of Broadcom and a member of the U.S. Cybersecurity and Infrastructure Security Agency’s Joint Cyber Defense Collaborative, has uncovered a new malware strain the company calls the most advanced piece of malware ever linked to China-based threat actors. The Symantec Threat Hunter team says it uncovered malware that appears to be used in a long-running espionage campaign against government agencies and critical infrastructure targets, and exhibits technical complexity never seen before by such actors, the company says. The disclosure caught the attention of CISA, which published an alert linking back to Symantec’s detailed analysis of the malware,…