Security Trainer

A hands-on web security course: lessons, in-browser code labs, quizzes and CTF-style challenges across 40+ modules, from SQL injection and XSS to OAuth, JWT and race conditions.

Role: Creator
Years: 2025
Status: Live
Stack: Security
Next.js

Visit security-trainer.vercel.app

security-trainer.vercel.app2025

The brief

Vulnerability labs are hard to set up, so most people only read about them.

The build

Labs that run in the browser with a Monaco editor and a terminal simulator, with XP, badges and streaks.

What shipped

Live at security-trainer.vercel.app.

Shares the most stack with this project

TracePaste a screenshot and get a React component you can run and edit. Gemini 2.5 Flash recreates the layout from a shadcn-style component catalog, then shows which part of the screenshot became which component, with a confidence tag on each. Won the DEV GitHub Finish-Up-A-Thon.Next.js
Consent CompassScans a site for its cookie consent banner. It loads the URL in Playwright, takes a full-page screenshot, uses heuristics to find the banner and its accept and reject buttons, and reports findings with a score. An early version.Next.js
Rocket VitalsRocketpark's website QA product. Enter a URL and it crawls the site and runs more than 200 checks across SEO, accessibility, performance, security, links, content and AI readiness. Reports score findings by severity and include fix guidance and exports.Next.js

Hiring for something like this?

Contract, advisory, or full-time. Tell me what you are building.

Start a conversation hello@elizabethannstein.com

The brief

The build

What shipped

Related work

Hiring for something like this?