A months-long investigation by Rapid7 Labs has exposed a sophisticated, state-sponsored espionage campaign by the China-nexus threat actor Red Menshen, which has embedded some of the most covert digital sleeper cells ever documented inside global telecommunications infrastructure. Released on March 26, 2026, the findings reveal a deliberate shift from opportunistic hacking to long-term pre-positioning within […] The post Hackers Plant Stealthy BPFdoor Backdoors in Telecom Networks for Long-Term Access appeared first on Cyber Security News.