BuckeyeCTF 2025

Friday, Nov 7, 8:00 PM EST – Sunday, Nov 9, 8:00 PM EST

What is Capture the Flag?

Capture the Flag (CTF) is a hacking competition in which teams compete to obtain “flags” by solving security-based problems.

New to CTF?

Don’t worry, there will be multiple challenges in every category geared toward participants with little to no experience.

Divisions

Division Team Size Eligibility Can attend in-person
Open Unlimited Anyone No
Undergraduate Unlimited Undergraduates and high school students attending a U.S. school No*
Ohio State 1-4 Ohio State University undergraduates Yes

In the Undergraduate division, you may have a mix of students from different institutions, but every member must be an undergraduate attending a U.S. university or high school.

Frequently Asked Questions

What is the format?

Teams will compete to earn points by completing challenges from various categories. Past categories have included cryptography, reverse engineering, web exploitation, binary exploitation, and miscellaneous. There are prizes for some divisions.

How big are the teams? What if I don't have a team?

See the table above. There will be a team-forming event prior to CTF weekend, and we also anticipate many Ohio State teams forming at the kickoff event.

I've never done a CTF before, can I still participate?

Absolutely! Above all, a CTF is an opportunity to learn something new. There will be problems appropriate for all experience levels, and you can count on teammates to help you if you get stuck.

OSU Students: check out Cyber Security Club — if you want a head start, we have a training CTF you can try right now!

Who runs BuckeyeCTF?

BuckeyeCTF is run by a small number of dedicated students from the Cyber Security Club @ The Ohio State University.

I have a question not listed here

Contact info@osucyber.club with any additional questions or join our discord.

Schedule (all times Eastern)

This event is fully virtual for those in our Open and Undergraduate divisions, but we have in-person opportunities for OSU students.

Friday, November 7th

  • 7:00 PM: Team formation (Pomerene 280)
  • 8:00 PM: CTF begins!
  • 8:00 PM - 12:00 AM: On-campus space available for in-person teams

Saturday, November 8th

  • 7:00 AM - 10:00pm: On-campus space available for in-person teams
Sunday, November 9th
  • 7:00 AM - 8:00pm: On-campus space available for in-person teams
  • 8:00 PM: CTF ends! Leaderboard is finalized and winners are announced
Tuesday, November 12th
  • 7:00 PM: Awards ceremony and CTF problem solution presentation at Cyber Security Club meeting

Throughout the weekend we will have food as well as minigames and first blood celebrations with prizes!