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Security Challenges

Practice the exact skill security interviewers test for — finding real vulnerabilities in real code, and knowing how to actually fix them. Pick a challenge below.

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Vulnerability Spotter
Quick-fire quiz: click the vulnerable line or identify the vulnerability type in short, real code snippets. SQL injection, XSS, SSRF, JWT bypass, and more.
~5 minBeginner-Advanced10 questions
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Secure Coding Challenge
Review a full, realistic file the way you would in a real code review. Find the vulnerability, then choose the correct fix from several plausible-looking options.
~10 minIntermediate-AdvancedFull files
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Find the CVE
Given a code snippet or a description of unusual behavior, identify which real, disclosed CVE it matches. Sharpens pattern recognition for real-world vulnerability research.
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Security Fundamentals Quiz
No code — just concepts. CIA Triad, OWASP Top 10, CVSS scoring, Zero Trust, and the frameworks every security engineer should know cold.
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Why practice this way?

01

Real code, not abstract trivia — the same pattern-recognition skill interviewers actually test for

02

Every answer includes a full explanation and a real, working fix — not just "correct" or "wrong"

03

Sourced from real vulnerable code in Raghu's GitHub repos and common OWASP/CWE patterns