KalmarCTF 2026 has finished! Congratulations to the winning teams! 🥇- sarrus 🥈- FMC 🥉- rasmusfaber And to the top teams on the human scoreboard! 🥇- mhackeroni 🥈- The Flat Network Society 🥉- P3ak Another huge thanks to our sponsors @hex-rays.bsky.social and Zellic!

#KalmarCTF is currently well underway - and we’re once again featuring prizes sponsored by @hex-rays.bsky.social and Zellic ! Come play along by visiting kalmarc.tf

You thought you could escape our attempts at reach out to you this Valentine’s Day? We won’t give up that easily ❤️ Happy Valentine’s Day!

🥈 @kalmarunionendm.bsky.social ends 2025 as the 2nd best CTF team in the world! That makes it three years in a row in the global top 3: - 2023: #3 - 2024: #1 - 2025: #2 Thanks to everyone for making every weekend harder than planned - here’s to 2026! #CTF #Hacking #Kalmarunionen

Shop is closed! We hope you had a lot of fun playing this year’s Hack.​lu CTF! Congratulations to everybody who solved challenges and especially the winners: 🥳 Congrats to the winners! 🎉 💪 🥇 @kalmarunionendm.bsky.social 🥈 justCatTheFish 🥉 0rganizers flu.xxx

Info - Hack.lu CTF 2025

Hack.lu CTF 2025 - Organized by FluxFingers, the CTF team of Ruhr University Bochum

flu.xxx

Thanks for an awesome #Hackceler8, it was really fun this year! It really came down to the wire at the end, hope to see you all again next year!

🏆 We did it: @KalmarunionenDM just won ASIS CTF - our 4th ASIS WIN! It came down to the wire. Other amazing teams like Maple Bacon, Shellphish, and especially BunkyoWesterns and r3kapig pushed us right to the last minute. That pressure is exactly why we are playing the hardest CTFs in the world.

🥈 2nd place at #GoogleCTF 2025! Kalmarunionen fought hard all weekend and landed a strong second behind Friendly Maltese Citizens - who almost full-cleared the entire CTF. That was seriously impressive - see you at the Hackceler8 Finals in Mexico City later this year 🇲🇽

🎯 Triple CTF Weekend in Copenhagen! 💥 This weekend, Kalmarunionen gathered physically for another meetup at Eupry in Copenhagen for an intense and fun-filled hacking meetup - joined by several of our teammates chiming in remotely! 🧠⚡

KalmarCTF 2025 is a wrap! Congrats to the winning teams! 🥇 - organizers 🥈 - Blue Water 🥉 - Tower of Hanoi 4️⃣ - r3kapig 5️⃣ - about:blankets 6️⃣ - The Flat Network Society A big thanks to our sponsors hex-rays and Zellic! See you all next year! 🚩

With under 48 hours till we kick off with #KalmarCTF 2025, we are happy to announce that Zellic is joining as a sponsor this year, as well as an updated prize pool! Come compete with the best competitive hackers from around the world! Registrations are now open at kalmarc.tf !

#𝗞𝗮𝗹𝗺𝗮𝗿𝗖𝗧𝗙 𝟮𝟬𝟮𝟱 𝗶𝘀 𝗷𝘂𝘀𝘁 𝗮𝗿𝗼𝘂𝗻𝗱 𝘁𝗵𝗲 𝗰𝗼𝗿𝗻𝗲𝗿 - 𝗰𝗼𝗺𝗲 𝗰𝗼𝗺𝗽𝗲𝘁𝗲 𝘄𝗶𝘁𝗵 𝘁𝗵𝗲 𝗯𝗲𝘀𝘁 𝗰𝗼𝗺𝗽𝗲𝘁𝗶𝘁𝗶𝘃𝗲 𝗵𝗮𝗰𝗸𝗲𝗿𝘀 𝗳𝗿𝗼𝗺 𝗮𝗿𝗼𝘂𝗻𝗱 𝘁𝗵𝗲 𝘄𝗼𝗿𝗹𝗱 𝗮𝗻𝗱 𝘄𝗶𝗻 𝗴𝗿𝗲𝗮𝘁 𝗽𝗿𝗶𝘇𝗲𝘀! (6x IDAPro from @hex-rays.bsky.social) Mark your calendars for March 7th - 9th, 2025, and gear up for a 48-hour showdown of skill, and pure #CTF & #hacking grit.