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# The top five turtles in a stack of 50
- URL: https://cje.io/2026/05/02/the-top-five-turtles-in-a-stack-of-50/
- Published: 2026-05-02T16:00:00.000Z
- Updated: 2026-05-18T07:49:14.000Z
- Description: AI defense and code review get the funding, but hospitals still run XP and Ivanti falls over weekly. The security industry is ignoring 45 of its 50 turtles.
- Author: Casey Ellis
- Tags: Thinking, Security, Hot Takes

As an industry we're focused on the top five turtles in a stack of 50\. AI for defense and code review matters — we need to be doing it — but it gets the most attention because it gets the most funding because it's the most visible. Meanwhile hospitals run Windows XP, Ivanti falls over every second week, and the rest of the stuff that powers the fundamental internet — we still haven't addressed it.