🚨 CTF Announcement! 🚨. We’re thrilled to share that RSTCON’s CTF is officially live on @CTFtime! 🏆Mark your calendars: October 24–26 during the conference. 🔹 Fun challenges & activities for all skill levels.🔹 Prizes: Free tickets to RSTCON 2026 + a custom RSTCON hard hat 🦺.

Top 5 CTF Platforms to sharpen your cybersecurity skills:. 1. Hack The Box.2. TryHackMe.3. CTFtime.4. PicoCTF.5. OverTheWire. Each offers unique challenges for all skill levels. Perfect for learning and practicing!.

We've been on air for 13 years. Just published moderator playbooks to GitHub: Feel free to discuss and contribute.

Cloud Rangers Brad Turner, Christopher Smith & Alice Chang are having a blast with the STARPWN CTF at #DefCon today! I mean, who doesn't love a space-related challenge for #hackers?!🚀🌌 TY Aerospace Village. What's your favorite #DefCon33 activity so far?

Why is blocked on my college network ?😭.

Happy new year! Our 2024 Recap is here:.- 6 CTFs won, including 2 DEFCON Prequalifiers.- 1st meetup of ~80 members @ DEFCON.- 19.5k mvms sent on Discord.- Rank #2 global on CTFtime. We're incredibly proud of all of our members and look forward to seeing everyone again next year!

CTFtimeのWriteupにあるこのボタンなんだろと思って押してみたらスパム報告だった　ごめん

Now @BlackHatEvents @Bugcrowd CTF 2025 write-ups are live on 👇. #CTF2025 #CyberSecurity #hacking #ctf #capturetheflag #infosec #PenetrationTesting #bugcrowd #ctftime

8/29 19:00(JST) ~ 8/31 19:00(JST)で開催されるよ～.僕も問題作ってるからぜひ参加してね！.

📸2023 Recap: .- Ranked 12th on CTFtime overall.- 1st place in 14 CTFs out of 34 played.- Participated in multiple onsite finals including WACON, HITCON, BHMEA and SECCON.- Organized SekaiCTF with almost 1000 teams joined.- First team meetup at DEFCON

5th world rank of ctftime in 2024. First time reached 1k ctftime weight point. Hope we could do better in 2025!

Registration is officially open : #AkasecCtf2024 #ctftime

Here's a quick recap of our 2024 journey : . - Finished 3rd on @CTFtime .- Traveled to 7 onsite finals.- 🥇in 7 CTFs.- 🥈in 6 CTFs.- 🥉in 5 CTFs .- Hosted CrewCTF 2024. Happy new year to everyone and looking forward to seeing more of y'all in 2025!! 🎇. Happy Hacking 🪛

Since CTFtime is down, we are officially disbanding our team

Congratulations to S1uM4i for another incredible achievement in 2024 of securing Country Rank 7 on CTFTime! This remarkable accomplishment highlights everyone’s hard work, dedication, and exceptional skills. A big thank you to every member for your efforts and passion.

Us : let’s win a big ctf to get some points.Ctftime : I guess no

Someone used me as a challenge for OSINT CTF back in 2021 without letting me know?? huh? what the hell. ? .

I participated in UIUCTF hosted by @sigpwny last weekend with @r3kapig and solved an interesting UEFI challenge with "aLm0s7 a 0dAy". Here is a writeup!.And we back to the #1 on ctftime again.

anyone participating in SekaiCTF ?.