Compete in Wargames or Build Challenges
Welcome to Fix the Flag Wargame. AppSec Village is proud to present our DEF CON Contest in partnership with SecDim an AppSec Wargame platform.
2 Ways to Participate
1. Unlike a typical CTF, this contest rewards the players who fix security vulnerabilities. You can choose between secure coding challenges or compete against other players in an Attack & Defence AppSec challenge where you need to secure your app before being given the chance to hack other players’ apps😈.
2. You can also use SecDim SDK to develop your own AppSec challenges by following the challenge contribution guidelines here. Challenges are due by August 3, 2025. All approved challenges will be included in the live CTF during AppSec Village @ DEF CON 33.
Winners
There are two categories of winners:
- The player with the highest total points by the end of the event (August 10 at 11:45 AM PDT)
- The best contributed challenge submission
The Award Ceremony will be held at 11:50 AM PDT in the AppSec Village on August 10.
Who Can Participate
Whether you are attending DEF CON 33 in person or want to participate remotely, everyone is welcome! This hybrid event spans 2.5 days, from 10 AM - 6 PM PDT on August 8-9, and 10-11:45 AM PDT on August 10.
Prizes
Sponsored by: 
Prizes
| Level | Prize | Example | Sponsored by |
|---|---|---|---|
| Player - Winner | $750 to spend in Semgrep’s Marketplace |
Playstation 5 Console Slim  |
 |
| Player - Runner Up | $500 to spend in Semgrep’s Marketplace |
Microsoft XBox Series S 
|
|
| Best Level - Winner | $500 to spend in Semgrep’s Marketplace |
Apple Watch Series 9 
|
|
| Best Level - Runner Up | $250 to spend in Semgrep’s Marketplace |
Nintendo Switch Lite 32GB 
|