BDSec CTF is an annual, international Capture The Flag competition organized by Knight Squad, a passionate cybersecurity team based in Bangladesh. The event follows a 24-hour jeopardy-style format and is designed to challenge participants across a wide range of categories including Web, Pwn, Reverse Engineering, Cryptography, Forensics, and OSINT.

More than just a technical competition, BDSec CTF is rooted in the spirit of resilience, strategy, and honor — inspired by Bangladesh’s historic Language Movement of 1952 and the Liberation War of 1971. This event encourages participants to channel that same determination and brilliance into the digital frontier.

BDSec CTF is open to participants worldwide — from newcomers to seasoned professionals. Whether you're playing solo or with a team, this is your chance to test your skills, learn from the best, and stand out in the global cybersecurity arena.