IrisSec
IrisSec is a group of nerds who love breaking computers and making stuff. We host IrisCTF, an annual 48-hour CTF that takes place the first full weekend of every year.
IrisSec is a group of nerds who love breaking computers and making stuff. We host IrisCTF, an annual 48-hour CTF that takes place the first full weekend of every year.
IrisCTF 2025 will be taking place from 4 January 2025 @ 00:00 UTC to 6 January 2025 @ 00:00 UTC. Registration will open in December at 2025.irisc.tf.
Want to sponsor the next IrisCTF? Want to become an organizer and join the IrisSec crew? Just wanna say hello?
Join our public Discord, or email us at contact@irisc.tf.
1786
2.96
6547
34.30/36.88
96.72%
98.53%
95.24%
96.77%
4.17/5.00
"Thank you for the CTF, all of the staff were incredibly kind and friendly. The Networks and OSINT challenges in particular were great."
- Anonymous Survey Response
"I just want to say that your website is the best CTF website I've ever seen! With the sound at each click, it's like a game menu."
- Anonymous Survey Response
"Great event. My second international CTF. I learned a lot by searching to solve challenges. Thanks for dedicating your time to make this event possible!"
- Anonymous Survey Response
Infra sponsored by goo.gle/ctfsponsorship, prizes sponsored by:
1087
2.78
2949
24.52/25.00
96.51%
96.70%
96.15%
97.16%
4.44/5.00
"Excellent hunt from start to finish. The RF section was also quite educational"
- Public CTFtime review
"Nice platform, great staff, fun CTF. Will come again."
- Public CTFtime review
"fun ctf! great challenges, both beginner and advanced"
- Public CTFtime review
Infra sponsored by goo.gle/ctfsponsorship, prizes sponsored by Sideliner.