Layer7, the security club at Sunrin Internet High School, is celebrating 15 years of running CTFs and offensive security research. We are back this year with a special anniversary CTF — individual participants only!

Registration Period: October 22, 2025 ~ November 12, 2025 (KTC)

Sponsors: Dreamhack, HSPACE, ENKI Whitehat

Prize Pool: ₩3,000,000 + merchandise

Participation: Individual registration only (no teams)

Format: Jeopardy-style

Register: https://ctf.layer7.kr

Additional Information: Please check the registration page for full details and schedule.

Don’t miss the registration deadline! Looking forward to seeing you in the competition.
Contact: [email protected]