Press Update? Patch Management in the IACS Environment and the Realities of Legacy DCS

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

Vendor integration engineer Tomás Iglesias has qualified more DCS patches than he can count. Rotating equipment engineer Sven Lindqvist has a compressor whose drive firmware was last updated when it was installed, and a manager asking why. Part four of The Deep End's 62443 series follows the two of them through a month of advisories, test benches and shutdown windows, and explains what the patch management technical report actually recommends, what it does not, and how to stay secure when "press update" is not an option.

Chapters

00:00:00 Cold open: the second Tuesday

00:03:11 Why the office…