Learn offensive security by practicing on realistic systems.
VulnField is Grey Shield's upcoming hands-on offensive security learning platform, built for students, security researchers, and penetration testers. Deploy realistic vulnerable environments, solve CTF-style challenges, and build practical skills that mirror real-world security assessments.
Every category ships with a difficulty curve — start easy, work toward insane.
Discover and exploit vulnerabilities in realistic, purpose-built web applications — from injection flaws to broken auth and business logic bugs.
Capture the Flag challenges built around real attack scenarios, designed to sharpen offensive thinking through hands-on problem solving.
Chain cloud misconfigurations, internal network footholds, and enterprise attack paths the way real engagements actually unfold.
Every lab is inspired by real penetration testing engagements conducted by Grey Shield — no theoretical filler.
Spin up an isolated, realistic environment in seconds — no setup, no local VM required.
Recon, find the weakness, and chain it into real access — exactly like a live engagement.
Submit your flag, see your score, and climb the leaderboard against other players.
VulnField isn't open yet, but Grey Shield is. Reach out for early access, a custom lab built for your team, or to talk shop.