GlacierCTF 2026: 24-hour online CTF by the LosFuzzys team, 20-21 November
Players of all skill levels are welcome, and no age or country restrictions are stated on the page. The 24-hour Jeopardy-style CTF runs online on 20-21 November 2026 (the fifth edition of the series), with challenges in pwn, reverse engineering, web security, cryptography and other topics. Organized by the LosFuzzys team; prizes have not been announced yet.
Hackathons Free Online
