CTF Arena
Capture The Flag contests: hack the practice targets, find the hidden flag and submit it for points.
Join solo or with a team.
Solve the challenge on its target.
Paste the flag, earn points, climb the board.
Showing 32 CTFS in this order: featured, live now, upcoming (soonest first), then finished. Ours and other organisers' CTFs are listed together.
HKCERT CTF 2026 (Qualifying Round)
HKCERT Capture The Flag 2026,” organised by the Hong Kong Computer Emergency Response Team Coordination Centre (HKCERT), the Hong Kong Productivity Council (HKPC) and the...
- Starts
- Ends
- Nov 7, 2026 15:00
- Duration
- 1d
- Where
- Online
- Entry
- Free
- Organiser
- Black Bauhinia HKCERT
- Prizes
- There are 2 rounds of the competition -> qualifying round an...
PINK+ CTF 2026
The first iteration of PINK+ CTF. Explore a variety of hand crafted challenges with a focus on steganography!
- Starts
- Ends
- Nov 9, 2026 17:00
- Duration
- 3d
- Where
- Online
- Entry
- Free
- Organiser
- PINK+
- Prizes
- 1st Place: 25$ + 6 Month Caido License per Member (Worth ~$5...
CSCTF 2026
"CSCTF 2026: Total Warfare" is an international, online, free jeopardy-style CTF focused on realistic cybersecurity scenarios inspired by critical infrastructure, defense...
- Starts
- Ends
- Nov 8, 2026 18:00
- Duration
- 2d
- Where
- Online
- Entry
- Free
- Organiser
- Mirachron
- Prizes
- TBD
SpookyCTF 2026
EVENT TIME HAS BEEN SHIFTED TO START AND END 2 HOURS AFTER TIME LISTED ABOVE
- Starts
- Ends
- Nov 7, 2026 22:00
- Duration
- 1d
- Where
- Online
- Entry
- Free
- Organiser
- NICC
- Prizes
- Open Division: (Online + In-person) 1st - 100$ 2nd - 50$...
BlackAlps CTF 2026
The BlackAlps CTF will be held at the end of the BlackAlps conference in Yverdon-les-Bains in Switzerland. It's a CTF for all level including from beginner up to advanced...
- Starts
- Ends
- Nov 7, 2026 03:30
- Duration
- 4h 15m
- Where
- Switzerland, Yverdon-les-Bains, Switzerland
- Entry
- Free
- Organiser
- BlackAlps
- Prizes
- We observe that the arrival of artificial intelligence (AI)...
Mimic
Mimic is an online Jeopardy-style CTF by Rare Byte Hub. Some challenges are exactly what they look like, and some aren't. Figure out which is which. There's something for...
- Starts
- Ends
- Nov 8, 2026 17:00
- Duration
- 1d
- Where
- Online
- Entry
- Free
- Organiser
- Rare Byte Hub
CSAW CTF Final Round 2026
CSAW CTF is one of the oldest and biggest CTFs. Designed as an entry-level, jeopardy-style CTF, this competition is for students who are trying to break into the field of...
- Starts
- Ends
- Nov 14, 2026 10:00
- Duration
- 1d 12h
- Where
- Online
- Entry
- Free
- Organiser
- NYUSEC
TVX CTF 2026
TVX CTF is a cybersecurity Capture The Flag competition organized by Tech Visions.
- Starts
- Ends
- Nov 14, 2026 01:00
- Duration
- 10h
- Where
- Online
- Entry
- Free
- Organiser
- Tech Visions
- Prizes
- TBD
Platypwn 2026
The Platypwn 2026 is an online Jeopardy CTF which offers easy challenges for beginners, but also medium and difficult challenges for advanced players.
- Starts
- Ends
- Nov 14, 2026 16:00
- Duration
- 18h
- Where
- Online
- Entry
- Free
- Organiser
- Platypwnies
- Prizes
- See https://platypwnies.de/events/platypwn
WolvCTF 2026
Our challenges range from beginner to hard in difficulty. Our esteemed members have worked tirelessly to bring new and stimulating CTF challenges to pose varying levels o...
- Starts
- Ends
- Nov 16, 2026 04:00
- Duration
- 2d
- Where
- Online
- Entry
- Free
- Organiser
- w01verines
- Prizes
- To be announced!
InIt CTF
InIt CTF is HII's (Hackers in India) beginner-focused Capture The Flag event, free and open to participants across India and internationally. 8 hours, Jeopardy-style, sol...
- Starts
- Ends
- Nov 15, 2026 04:30
- Duration
- 8h
- Where
- Online
- Entry
- Free
- Organiser
- Hackers_In_India
- Prizes
- Finalized with sponsors — includes .xyz domain codes and vou...
h4ckc0n 2026
h4ckc0n is a 24-hour international Jeopardy-style Capture The Flag competition.
- Starts
- Ends
- Nov 15, 2026 20:30
- Duration
- 1d
- Where
- Online
- Entry
- Free
- Organiser
- d4rkc0de
- Prizes
- The total prize pool for h4ckc0n is ₹10,000 INR, distributed...
All challenges (17)
Every published challenge on the platform. Open one to read the brief; register to submit flags.