Setting the Target: IEC 62443-3-2 Risk Assessment, Part Two — Detailed Assessment, SL-T and the Cybersecurity Requirements Specification, with Triton

Deep End Era. Engineering with Sankalp · Oct 28, 2026 · 1h 2m

Leila Nasser and Rafa Ortega return to the fourteen zones they drew for the Al Sahil fifth gas train, and take the safety zone through the full detailed assessment. To keep themselves honest, they replay the Triton attack of 2017 step by step against their own design. Part eight of The Deep End's 62443 series covers how a target security level is actually chosen, and what goes into the document that every later contract depends on.

Chapters

00:00:00 Cold open: a trip on a Friday evening

00:03:25 Where we left off

00:05:32 Steps one and two: threats and vulnerabilities

00:09:11 Step three…