OFFSEC

OffSec is the training company behind Kali Linux and the OSCP certification, known for exams that are entirely hands-on: candidates must compromise live machines in a timed lab and submit a professional report. Its catalog spans penetration testing (OSCP), web exploitation (OSWE), exploit development (OSED), wireless (OSWP), and defensive analysis (OSDA). The credentials carry weight because they cannot be passed by memorizing question banks.