Jonathan Chee, penetration tester and security engineer. Offensive security work, tooling and write-ups, including the AEGIS v2 pentest workbench.https://jc-security.com/https://jc-security.com/writeups/osep-review/https://jc-security.com/writeups/osep-review/I passed OSEP on my first attempt with 15 flags. Notes on how I studied, how the two days went, and whether PEN-300 is worth it.Sat, 03 Oct 2026 00:00:00 GMThttps://jc-security.com/writeups/oswe-review/https://jc-security.com/writeups/oswe-review/I passed OSWE on my first attempt, both targets fully. It was the hardest OffSec exam I've done, and this is what got me through it.Sat, 03 Oct 2026 00:00:00 GMT