BPFDoor isn’t new to thecyberattackgame in fact, it’s gone undetected for years but PwC researchers discovered the piece of malware in 2021. Subsequently, the cybersecurity community is learning more about thestealthy nature of malware, how it works, and how it can be prevented. What’s BPFDoor? BPFDooris a piece of malware associated with China-based threat actor Red Menshen that has hit