Hack with us tonight and all weekend at KalmarC.TF 🚀

KalmarC.TF is back for its 4th year!

Join us at https://kalmarC.TF for a weekend of hacking, learning, and fun.

As always, we have some great prizes up for grabs, including Hex-Rays IDA licenses and prizes from Zellic.

Kalmarunionen finishes #2 in the world on CTFtime 2025 - marking three consecutive years in the global top 3!

• 🥉 2023: 3rd
• 🥇 2024: 1st
• 🥈 2025: 2nd

✨ A Thrilling Season

Staying at the very top of competitive hacking year after year is harder than getting there once. The global field keeps getting stronger, the formats …

🎉 Kalmarunionen is back with another electrifying edition of #KalmarCTF! 🎉

Last year was a blast, and we’re dialing it up yet again. Mark your calendars for March 7th - March 9th, 2025 – 48 hours of relentless hacking, mind-bending challenges, and a battle for ultimate CTF glory.

🎉 We Did It! 🎉

Kalmarunionen is now officially the #1 competitive hacking team in the world! 🏆

✨ The Road to #1

It’s been an incredible journey since we started in 2020, climbing our way up the global rankings on CTFtime.org:

• 2020: 66th place
• 2021: 15th place
• 2022: 10th place
• 2023: 3rd place
• 2024: 1st place 🚀

So many …