Dutch ethical hacking community practicing CTFs, HackTheBox challenges, and security skills.
Ctf Groups, Channels & Servers (18)
Browse 18 active Ctf communities — 0 WhatsApp, 2 Telegram and 16 Discord listings. Top categories: Educational, Science and Technology, Gaming Community. Last new entry 2 weeks ago.
Telegram Groups
2
Discord Servers
16
Telegram Channels
2
Top categories:
Educational 8
Science and Technology 7
Gaming Community 1
Entertainment 1
Cybersecurity 1
Community keeping the classic Team Fortress mod Fortress Forever alive with capture-the-flag games.
backdoor is an educational CTF and IT security server for practicing hacking challenges.
PrimeSec is a CTF and security learning server with coding challenges and writeups.
NYUSEC is NYU's security club server running CTF practice and college cybersecurity talk.
A competitive Minecraft PvP server running ranked CTF and structured matches for serious players.
Oscar Zulu community for CTF challenges, OSINT investigation and hands-on security practice.
French cybersecurity learning community CyberV focused on coding, CTF challenges and skill building.
Capture-the-flag crew tackling security challenges, writeups and GitHub tooling together.
whoamidiscord is a CTF community where members practise hacking challenges and capture the flag.
Capture-the-flag and security players team up to grind challenges and sharpen exploitation skills.
Hack This Site community for learning ethical hacking through CTF challenges and security puzzles.
FAQs about Ctf groups
How many ctf groups are listed on GroupsGyani?
18 active ctf communities are currently live — 0 on WhatsApp, 2 on Telegram, and 16 on Discord.
Which platform has the most ctf groups?
Discord hosts the largest share — 16 of 18 ctf listings (89%).
What categories do ctf groups fall under?
Top categories carrying the ctf tag: Educational, Science and Technology, Gaming Community.
Are ctf groups on GroupsGyani verified?
Every invite is auto-fetched, validated and admin-approved before going live. Abandoned and dead links are swept twice a week and removed from public listings.
How fresh are the ctf group listings?
The newest activity on this tag was 2 weeks ago. New ctf submissions are reviewed and published throughout the week.
How do I submit a ctf group?
Open /addgroup and paste any WhatsApp, Telegram or Discord invite link. Tag it with "ctf" so it appears on this page after approval.