Researchers at Cisco Talos have uncovered an ongoing cyber campaign delivering a previously undocumented backdoor called Dohdoor. The activity, attributed to a threat actor tracked as UAT-10027, has been active since at least December 2025 and primarily targets education and healthcare organizations across the United States. According to Talos, the attackers rely on a carefully […] The post Dohdoor Malware Targets U.S. Schools and Healthcare In Multi-Stage Campaign appeared first on Cyber Security News.