Ghost: A 23-Level Linux Wargame Available Now

Ghost is a 23-level Linux wargame hosted on BreachLab, featuring levels 0 to 22 accessible via SSH. The challenges cover shell fundamentals, SUID hunting, log parsing, privilege escalation, and real-world constraints using containerized environments. Completing Ghost unlocks a 32-level post-exploitation track called Phantom, with the first 100 finishers earning permanent status. The platform is free, requires no signup to explore, and includes on-platform scoring.