Challenges
Master AI-assisted coding through hands-on practice
33 challenges
6 categories
E-commerce Checkout Security Review
Code ReviewHardPremium
Review this checkout system code for security vulnerabilities, data validation issues, and potential exploits. Document all issues you find.
20m
2.0x XP
0 completed
Code Review: Security Audit
Code ReviewHard
Review this authentication code and identify all security vulnerabilities. Document your findings in the review.md file.
30m
2.0x XP
0 completed
Analyze the Database Deadlock
AnalyzeHard
Production transactions are failing with deadlock errors. Analyze the code to identify the deadlock pattern and propose a fix.
25m
2.0x XP
0 completed
Fix the N+1 Query Problem
RefactorHardPremium
An API endpoint is making hundreds of database queries when it should only make one. Optimize the data fetching.
30m
2.0x XP
0 completed
Fix SQL Injection Vulnerability
Bug FixMedium
A database query is vulnerable to SQL injection attacks. Fix the security issue using parameterized queries.
20m
1.5x XP
0 completed