🔥The 9th Round of Easy Loan, Earn $40 Reward is in progress❗️ ⏰ Promotion Period: January 15th - Feburary 15th, 2025 👉 Register now and check more details at gate.io/campaigns/358

Calling all CTF Authors! Do you love building CTF tasks? New competition to find the best CTF Tasks, both original (never seen before) and of the past year (Hall of Fame) forum.defcon.org/node/233145

📢 Hello World Adam Doupé and [email protected] are happy to announce the launch of a new 🎙 podcast focusing EXCLUSIVELY on the 👩‍💻👨‍💻 CTF scene! Our first episode "What is Capture the Flag (CTF)?" is out now: ctfradi.ooo/2020/09/07/wha… And for those that want 📺: youtu.be/aBKhuWTc1Eg

Congratulations to 2020 top CTF performers: perfect blue (perfect blue), MSLC (Leet More), hxp (hxp)! See you in 2021.

Important changes in 2021+ event weight voting: now only teams who participated at least in 2 events can vote. Votes accepted from members who joined those teams before the event.

If you wanted to join empty team for long time and request was in "pending" status - check it at your profile page now. ctftime.org/profile All the pending requests created pre 2020 will be autorejected soon.

Now organizers can edit events after approval. Still require moderation after editorial. Also, you can mark an event as "casual" and it will not get any rating weight.

Wanted your team alias to be displayed at scoreboards instead of team name? Now you can (not before cache expires though).

We fixed a bug with team name parsing (sanitizer was too strict) and updated some scoreboards - there can be slightly changes in 2021 team ratings.

2021 is over and the best teams are: perfect blue (perfect blue), organizers and Super Guesser (Super Guesser)!

Missed a date. Ten years ago on 03.05.2012 the first CTFtime user was created.

It’s finally time. H4CK1NG.GOOGLE

The best teams of 2022 are: organizers, perfect r00t (perfect blue, SSLab), Never Stop Exploiting. Congratulations and Keep hacking!

Event voting changes: now if some CTF missed 18 months window their weight still starts from 0 but max voting weight is kept.

CTFtime can be offline from 10.06 22:00 UTC - 11.06 06:00 UTC for reasons beyond our control. Beware if you use OAuth as login method for your event. Sorry for inconvenience.

Login via Twitter works again now.

2023 top performers: Blue Water (perfect blue), C4T BuT S4D, kalmarunionen (Kalmarunionen)!

Now you can submit individual competition events to CTFtime. No scoreboards or rating though. Greets to vos for contribution!

If you use facebook to login CTFtime, please, add another login method before May 24, 2024.

2024 top performers: kalmarunionen (Kalmarunionen), Friendly Maltese Citizens (Friendly Maltese Citizens), AQ thehackerscrew (thehackerscrew)! Gratz!

We've been on air for 13 years. Just published moderator playbooks to GitHub: github.com/ctftime/modera…. Feel free to discuss and contribute.