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Free courses, field notes, and tools for engineers who ship real defenses. Same lessons you will watch on YouTube.

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Tools

Games

Instrument 00 / Web postureOnline

Target / Public website URL

🔒SSL / TLS

📋Security Headers

🌐CORS Config

🍪Cookie Flags

📧SPF / DMARC

📁Exposed Paths

🔍Supply Chain

🛡️WAF Detection

30+

Checks

<30s

Results

A+

Max Grade

Field notes

Zero Trust Architecture: A Practical Guide for Cloud Engineers AZ-500 vs SC-200: Which Cert Should You Pursue?MCP Security Risks and How to Defend Against Them Microsoft Entra ID Conditional Access Deep Dive AI Attack Surface: What Every Engineer Must Know Azure DevOps Pipelines: Beginner's Guide Defender for Identity vs Defender for Endpoint Prompt Injection: Intro to a New Attack Vector

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Security Tools

Jun 2, 2026·6 min read

Free Website Vulnerability Scanner: Check Your Security Headers, SSL, and More

Protego's free vulnerability scanner checks your website for missing security headers, SSL/TLS issues, cookie misconfigurations, CORS problems, and more in under 15 seconds. No signup required. Get an A-F security grade with one-click fix code for Nginx, Apache, Next.js, and Cloudflare.

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