As usual checking out the Red Alert ICS CTF is a must. The model city is amazing. If you have the time come hack around @icsctf 🚂⚠️ #defcon31

Glitching Attack Frenzy! ⚡ Our participants are going on the glitching attack challenge! The energy here at Red Alert ICS CTF is electric, and we’re having an absolute blast at @defcon 33. 🚀 #RedAlertICSCTF #OTsecurity #ICSCTF #defcon33 #defcon

We've got Korean snacks,stickers, and traditional Korean swag waiting for you! If you're at @defcon and haven't joined us yet... seriously, where ARE you?! Come hang with us!

🚨Red Alert ICS CTF Day 3 is On at @defcon33 First Blood ‘Keypad’ ✨

🚨Red Alert ICS CTF Day 3 is On at @defcon33 First Blood ‘PPS-JWT’ ✨✨

Derail the train Solved! 🚂 The Derail challenge has been conquered and more and more teams are jumping in to crack it! 🏆🔥 We’re having an amazing time here at @defcon 33. 🚀 #RedAlertICSCTF #OTsecurity #ICSCTF #defcon33 #defcon

🚨Gonggi(Korean Jackstone) - Live at our Red Alert ICS CTF learn in 60 seconds and jump in, play, and bring your team or friends! ✨

After placing 2nd last year, we regrouped to win the🏅 and a coveted black badge this year at the Red Alert Industrial Control Systems (ICS) at DEFCON. Loved the @icsctf challenges with crazy things like crashing boats and stopping trains! Another great year in the books 😎

✈️ Airport Secured! 🛫 Congratulations for successfully taking control of the Airport at the Red Alert ICS CTF during @defcon 33! The competition’s heating up, and more OT challenges are still waiting for their champions. #RedAlertICSCTF #OTsecurity #ICSCTF #defcon33 #defcon

🧨 Red Alert ICS CTF Day 2 is ON at @defcon 33!🧨 Come and join our Red Alert ICS CTF! Are You ready to prove your skills? #ICS #DEFCON #ICSCTF #RedAlert

And that’s a wrap for the Red Alert ICS CTF at @defcon 33 ! 🎉 Huge congrats to our top teams 🏆 and a big thanks to all 73 teams who joined the battle. Here’s how it all ended 👇💻🔥 More updates to follow… #defcon33 #DEFCON

Thank you for participating in the RedAlert ICS CTF at #defcon32 ! It was a really enjoyable experience, and we're honored to award the black badge again this year, just as we did last year. Congratulations to the winning team, Tesuji! @icsctf

Excited to Welcome @mayfly74 , Director @nshcthreatrecon (South Korea), as a #c0c0n2025 speaker! With 24+ years in IT security, he's a zero-day expert, CTF organizer (Black Hat, DEFCON, HITB), and elite hacker (Pwn2Own, SPIRITCYBER). #CyberSec #icsctf #Conference #Hacking

Good morning from Red Alert ICS CTF at @defcon! 🌞 We’re live for Day 3 — the grand finale! Just 2 hours left to make your mark. Let’s go! 🔥 #DEFCON33 #ICSCTF #defcon

Day 2 of the Red Alert ICS CTF is underway at @defcon 33! 🔥 More challenges, more hacking, and even higher scores ahead. Good luck, teams! 🛠️⚡ #RedAlertICSCTF #OTsecurity #ICSCTF #defcon33 #defcon

That’s a wrap for Day 2 at @defcon 33. Solid games, good laughs, and plenty of action. One more day to go , let’s finish strong. #DEFCON #ICSCTF" #DEFCON #defcon33

Day 2 of the Red Alert ICS CTF at @defcon comes to a close. Plenty of great plays, close calls, and shifts on the scoreboard today. 🏆 With one day left, it’s still wide open. #RedAlertICSCTF #OTsecurity #ICSCTF #defcon33 #DEFCON

@icsctf @defcon

scada hacking fun starts soon