Master Secure Coding
Master Secure Coding
Level up your security skills with hands-on code review challenges. Identify and fix vulnerabilities to become a better engineer.
Card Deck API
Review the API code for CardClash, a virtual trading card game platform where players collect rare cards, build decks, and trade with others. The platform recently launched a mobile companion app and enabled CORS to support cross-origin requests. Players have reported suspicious activity where their rare cards and deck configurations are being duplicated on other accounts. Investigate the API implementation to identify potential security issues.
Vulnerable Code
Instructions:
- Browse through the files to understand the application structure
- Find and click on the line containing the vulnerability
- Click "Check Line" to verify your answer
Secure Your Engineering Team
Build a security-first culture with our enterprise training platform. Custom challenges, team analytics, and dedicated support for your organization.
Team Dashboard
Track progress and manage users with ease
Custom Challenges
Tailored to your tech stack and industry
SSO Integration
Seamless authentication for your team
Priority Support
Dedicated account manager and SLA
Ready to scale security training?
Join leading companies who trust us to train their engineering teams on secure coding practices.
Contact SalesVolume-based pricing available