A Thousand Patients and an AI Receptionist
What do I need to know about a business process before I let an AI agent run it?
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Keith Townsend writes and talks about AI infrastructure, private cloud, enterprise architecture, and the decisions that determine who stays in control.
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Episode 704: When You Can’t Trust Your Software Updates
Calvin Hendryx-Parker, co-founder and CTO of Six Feet Up, takes the host chair for a week some are calling Black October: remote shell exploits across the PHP world, a certificate authority with crackable keys, a Brotli RCE in Python, and a second CI pipeline compromise at LiteLLM after a leaked key wasn't fully revoked. Keith Townsend asks whether these are developer problems or operator problems, and how you practice zero trust when the security updates themselves can't be trusted. Calvin makes the case for package cooldowns in uv and pip, Keith counters with the patches you can't afford to wait on, and both land on least privilege for the keys that run your build pipelines. Keith tells the story of a coding assistant that killed every app on his Mac when asked to stop one experiment, which leads to smaller agents with scoped, time-bound permissions, code smells for operations, and practical advice for teams without a dedicated security staff.
Research
Layer2C is Keith’s research and testing surface: where the judgment in the writing gets formalized into assessments, models, and lab work. You can also query it directly.
Ask the Virtual CTO Advisor ↗ Governed answers over the Layer2C research system. Every answer carries its evidence, versions, and limits — and the decision records stay yours.- Layer2C ↗ Vendor authority assessments scored against the 4+1 AI Infrastructure Model and DAPM.
- The Fourth Cloud ↗ Function-by-function readiness scoring for on-prem control planes.
- Layer2C Labs ↗ Scoped builds on real hardware that validate where authority actually holds.
- Stack Builder ↗ Composes architectures from the assessed evidence.
About
The CTO Advisor is owned by The Advisor Bench LLC, wholly owned by Keith and Melissa Townsend. Keith is the practitioner voice: he founded the brand in 2016 and writes from the perspective of someone who has designed, implemented, and run the infrastructure he writes about. Melissa is co-owner and the creative innovator on the team — the CTO Advisor Road Trip is her brainchild — and she runs the business that keeps the brand accountable to its customers and community.
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