Signal-Based Rootkit Command Trigger Detected

Ethan Andrews@eandrews

•updated Feb 20, 2026•4•0•47

This detection identifies the use of the 'kill' command with a specific, non-standard real-time signal (-59). Rootkits like 'Singularity' use these 'magic' signals as an out-of-band communication channel to trigger actions within a malicious kernel module, such as toggling stealth features or granting root privileges.