Chronos Security CTF (CSCTF) 2025 is the 3rd edition of our realism-first, team-based jeopardy cybersecurity competition. Born as the **Sibiu Military Cyber Challenge (SMCC) 2023** in Sibiu, Romania, expanded nationwide as **CSCTF 2024**, and now open to the international community.
What to expect: Real services, clear exploit paths, no blind guessing. Challenges map to real attacker tradecraft across Web, Pwn, Reverse, Crypto, Forensics, Windows, Linux, Cloud/Infra, and select ICS/OT scenarios. Difficulty ramps from accessible learning tracks to hard pro-tier chains so mixed-skill teams stay engaged.