Black & White Path

May 8, 2026 · Information Security

How Ukrainian Cyber Warriors Use Zapper to Hide Malicious Linux Processes

Zapper, a Linux process‑hiding tool created by Hacker’s Choice, runs without root, manipulates the ELF auxiliary vector via ptrace, hides command‑line arguments, environment variables and child processes with negligible overhead, and has been observed in real Ukrainian cyber‑war operations, prompting specific defensive recommendations.