BPFDoor Variants Hide with Stateless C2 and ICMP Relay Tactics

Seven new BPFDoor variants that push Linux backdoor tradecraft deep into the kernel, making them harder to spot in large telecom networks. These implants use Berkeley Packet Filters (BPF) to quietly inspect traffic inside the operating system kernel, waiting for a “magic packet” that activates a hidden shell. Once triggered, the backdoor blends into normal […]

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