Master Cybersecurity with CSEM CTF
Join a global community of elite hackers and test your skills with real-world challenges.
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Active Challenges
2838
Elite Warriors
38
Learning Modules
Cyber Events
Compete in elite CTF events and prove your skills globally.
Web Arena
Web Arena CTF – Powered by Sturtle Security Pvt. Ltd.
Get ready to test your cybersecurity skills in an intense 24-hour …
Blue Arena
Blue Arena – The Ultimate Forensics Battleground
Step into the Blue Arena, a high-stakes digital warzone where only the …
Cyber Arena
Elite Challenges
Test your skills with real-world cybersecurity challenges.
The Three Cities Protocol
MEDIUMThe Final Challenge To decrypt the Shadow Atlas archive and complete this CTF challenge, you must submit the geographical coordinates of all three cities in the correct format: FLAG FORMAT: STURSEC{latitude1,longitude1,latitude2,longitude2,latitude3,longitude3}
License Key
MEDIUM=== SECRET LICENSE VALIDATOR v2.3 === This program validates premium license keys. A valid license key will reveal a hidden message. Usage: ./license_checker <license_key> Hint: The validation algorithm checks multiple conditions. Only the TRUE license key will unlock the secret. Good luck, reverser! Flag Format: STURSEC{}
Game is Matter
HARDGamer are think we hackers are nothing crack the game and show the gamer we are all
Learning Arsenal
Master cybersecurity with expert-designed learning paths.
Warrior Testimonials
Hear from cybersecurity professionals who leveled up with CSEM CTF.
m3h6u6
🇮🇳 India
"The forensics challenges were my favorite part. Really well-designed and engaging!"
Charlie001
🇮🇳 India
"Web challenges were tricky. Amazing learning experience!"
lkyc137
🇨🇭 Switzerland
"The forensic challenges were fun and intellectually stimulating."
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