🇳🇱 WHY
Get ready to hack! The CTF is back at WHY2025!
Brought to you by the same team behind the legendary CTFs at OHM2013, SHA2017, and MCH2022. After a well-earned break, we’re back—bigger, better, and more challenging than ever! Just like in 2022, we will have both online and on-site challenges, making the CTF accessible to everyone. Whether you’re a seasoned hacker or a total beginner, there’s a challenge waiting for you.
For event info go to https://why2025.org/
Archived challenges by category
Editions
| Edition | Weight | Web | Pwn | Reverse | Crypto | Forensics | Misc | Total |
|---|---|---|---|---|---|---|---|---|
| 2025 Finals | – | 1 | 3 | 8 | 2 | 4 | 6 | 24 |
| 2025 Quals | – | 1 | · | · | · | · | 2 | 3 |