SecLeaf Q4 CTF 2026

What it is SecLeaf Q4 CTF 2026 is a 24-hour international Capture The Flag (CTF) competition organised by SecLeaf, running from 31 October 2026. It is a hands-on cybersecurity challenge where participants solve practical security problems across multiple categories and compete against teams from around the world.

Who it's for The event targets cybersecurity enthusiasts, ethical hackers, penetration testers, security researchers, students, and developers who want to sharpen their offensive and defensive security skills. Teams of 1 to 4 members are allowed, making it accessible both to solo competitors and small squads.

What to expect

• A full 24-hour window to attempt challenges hosted on the CTFd platform.
• Practical cybersecurity problems spanning typical CTF domains such as web exploitation, cryptography, reverse engineering, forensics, and binary exploitation.
• A global leaderboard where teams compete for rankings against international participants.
• Certificates for the top three ranked positions, with prize details to be announced.

How to participate

• Register on Unstop for SecLeaf Q4 CTF 2026.
• Join the official SecLeaf Discord for announcements, updates, and support.
• On 30 September 2026, the CTFd platform goes live, allowing teams to onboard and complete the required team setup.
• Further event instructions and updates are shared through the official Discord channel and the event website at https://ctf.secleaf.xyz.

Key details

• Event date: 31 October 2026
• Duration: 24 hours
• Team size: 1-4 members
• Registration deadline: 25 October 2026
• Prizes: 1st, 2nd, and 3rd place (details to be announced), plus certificates
• Format: Online, open internationally

About the organiser SecLeaf is a cybersecurity community that runs CTF competitions and security-focused events. Their CTFs are designed to give participants realistic, practical challenges rather than purely theoretical exercises, and they maintain an active Discord and WhatsApp channel to keep the community engaged between events. The Q4 edition continues this series, offering a platform for both newcomers and experienced players to test their skills in a competitive, time-bound environment.

Why attend CTFs are one of the most effective ways to build practical security skills, learn new techniques, and network with like-minded professionals. For developers and founders building products, participating or following such events helps build awareness of common vulnerabilities and secure coding practices. The international nature of SecLeaf Q4 CTF means participants get exposure to a diverse set of challenges and competitors, making it a valuable addition to any security practitioner's calendar.