A default shell (or login shell) is the shell that gets executed by a system when a user logs in.
A symbolic link at /bin/sh points to the system’s default shell on Linux and Unix-like systems.
Linux Persistence: atd
2025-04-01 DFIR CTF linux persistence at atd
Linux Persistence: SSH
2025-03-29 DFIR CTF SSH hardening hunting persistence linux persistence hunting hardening SSH PAM