Code Review Lab — practice secure code review
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Code review is a skill.
Practice it.
Build the instinct that catches vulnerabilities in review.
loading daily challenge…
Build the instinct that catches vulnerabilities in review.
Build the instinct that catches vulnerabilities in review. Hands-on challenges in real production code.
SnapProfile is a Flask-based social app where members can set their profile picture by pasting an image URL instead of uploading a file. The backend fetches that URL server-side and saves the bytes. The service runs on a cloud instance with an attached IAM role. Review the avatar-import flow and how the remote image is retrieved.
“We dropped Code Review Lab into our security training rotation. Two weeks later our engineers were catching things in PR review we'd historically missed.”