// who we are

CORPORATE UNDERGROUND

Corporate Underground is a security firm and community platform built by practitioners, for practitioners. We do the work — internal network assessments, web application pentests, OSINT investigations, red team engagements — and we built this platform to give something back to the community that shaped us.

The resource database is free. No account required, no paywall, no catch. It's a curated, searchable index of tools, writeups, PoC code, references, and training material maintained by a small team of people who use this stuff every day.

We believe in the culture. Lock picking after work, CTFs on weekends, helping the new person figure out where to start. The underground isn't a place — it's a mindset. This site exists because someone helped us when we were getting started, and that debt doesn't pay itself.

WHAT WE COVER

red team web app internal pentest active directory osint malware analysis dfir cloud ctf beginners and more

Professional services live at corporateunderground.net. If you're a business looking for a pentest or security assessment, that's where to go.