Below the Harness: Governing a Multi-Model, Multi-Harness World
Docker Blog: We believe the future is a multi-model, multi-harness world. Below the Harness: Governing a Multi-Model, Multi-Harness World
By Dillip Chowdary • Sep 02, 2026 • Source: Docker Blog
What happened
, Para 1: 80–160 words. Section 3, Para 2: 80–160 words. Section 4, Para 1: 80–160 words. Section 4, Para 2: 80–160 words. Section
Below the Harness: Governing a Multi-Model, Multi-Harness World Posted Sep 2, 2026 Srini Sekaran We believe the future is a multi-model, multi-harness world. In 1988, Norm Hardy described a problem that had been quietly breaking systems for years: the confused deputy.
How it works
It inherits your authority: Your credentials, your repo access, your ability to call APIs. It might be acting on an instruction found in its environment, on a step it invented, or on a confident wrong answer.
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Why it matters
The industry didn’t fix the confused deputy problem by making the deputy itself more careful. See the full write-up from Docker Blog via the source link for quotes and complete context.
Who is affected
Read the original coverage at Docker Blog via the source link above for the complete details and primary quotes.
What to watch next
Cross-check release notes and official docs before changing production systems based on early reporting.
Developer Action Items
- ☐ Diff the official changelog for Docker before you bump — APIs, defaults, and removed flags only.
- ☐ Install through the vendor's documented channel in staging; keep a one-command rollback and time-box the canary.
- ☐ Grep your repo for old flag names, lockfile pins, and plugin versions that the notes mark as breaking.
- ☐ Prefer the first patch cut over the day-zero tag unless you have a reason to be on the leading edge.
- ☐ If Docker Blog did not name a region, plan, or SKU, screenshot the official availability line before you promise it to users.
Author
Dillip Chowdary
Writes Tech Bytes coverage of AI, engineering, and the tools that actually ship. Editor of Tech Pulse Daily.
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