- Offsec: OSCP - Basically the de facto cert if you want any call backs for offsec jobs ($1649)
- ZeroPointSecurity: CRTO - Good foundational red teaming/adversary emulation knowledge and discussions of OPSEC, somewhat recognized ($462)
- HackTheBox: CPTS - A cheaper OSCP with more knowledge but less recognition ($218 with student subscription and finishing course in a month)
- TCM Security: PNPT - A beginner penetration testing certification that covers external to internal ($399)