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Law 0 · Katie's LawEvery system is shaped by the human drive to do less work. This is not a flaw. It is the economic force that produces all software — and all software failure.◆Law I · Boundary CollapseWhen data crosses into a system that interprets structure, without being constrained, it becomes executable.◆◆ 2026 IncidentAxios. 70 Million Downloads a Week. North Korea Inside.◆Law II · Ambient AuthorityWhen a system trusts the presence of a credential instead of verifying the intent behind it, authentication becomes indistinguishable from authorization.◆◈ AXM-001Set Theory — Membership, Boundaries, and Belonging◆Law III · Transitive TrustWhen a system inherits trust from a source it did not verify, the attack surface extends to everything that source touches.◆◆ 2026 IncidentClaude Code — The Accept-Data-Loss Flag◆Law IV · Complexity AccretionSystems do not become complex. They accumulate complexity — one reasonable decision at a time — until no single person can hold the whole in their head.◆Law V · Temporal CouplingCode that assumes sequential execution, stable state, or consistent timing will fail the moment concurrency, scale, or latency proves the assumption wrong.◆◆ 2026 IncidentCopy Fail — 732 Bytes to Root on Every Linux Distribution◆◈ AXM-002Boolean & Propositional Logic — True, False, and the Excluded Middle◆Law VI · Observer InterferenceWhen the system that monitors health becomes a participant in the system it monitors, observation becomes a failure vector.◆◆ 2025Amazon Kiro — The 13-Hour Outage◆◆ 2025Operation Chrysalis: The Notepad++ Supply Chain Hijack◆◆ 2025Replit Agent — The Vibe Code Wipe◆◆ 2025Shai-Hulud — The npm Worm That Ate Its Own Ecosystem◆◆ 2024Air Canada Chatbot — The Policy That Wasn't◆◆ 2024Change Healthcare — One-Third of US Healthcare, One Missing MFA◆◆ 2024CrowdStrike — The Security Update That Broke the World◆◆ 2024Google Gemini Image Generation — The Six-Day Pause◆◆ 2024XZ Utils — The Two-Year Infiltration◆◆ 20233CX — The Supply Chain That Ate Another Supply Chain◆◆ 2023Amazon Prime Video — The Per-Frame State Machine◆◆ 2023Bing Sydney — The Chatbot That Went Rogue◆◆ 2023Samsung ChatGPT Leak — The Employee Who Pasted the Secret◆EFFODE · LEGE · INTELLEGE◆Law 0 · Katie's LawEvery system is shaped by the human drive to do less work. This is not a flaw. It is the economic force that produces all software — and all software failure.◆Law I · Boundary CollapseWhen data crosses into a system that interprets structure, without being constrained, it becomes executable.◆◆ 2026 IncidentAxios. 70 Million Downloads a Week. North Korea Inside.◆Law II · Ambient AuthorityWhen a system trusts the presence of a credential instead of verifying the intent behind it, authentication becomes indistinguishable from authorization.◆◈ AXM-001Set Theory — Membership, Boundaries, and Belonging◆Law III · Transitive TrustWhen a system inherits trust from a source it did not verify, the attack surface extends to everything that source touches.◆◆ 2026 IncidentClaude Code — The Accept-Data-Loss Flag◆Law IV · Complexity AccretionSystems do not become complex. They accumulate complexity — one reasonable decision at a time — until no single person can hold the whole in their head.◆Law V · Temporal CouplingCode that assumes sequential execution, stable state, or consistent timing will fail the moment concurrency, scale, or latency proves the assumption wrong.◆◆ 2026 IncidentCopy Fail — 732 Bytes to Root on Every Linux Distribution◆◈ AXM-002Boolean & Propositional Logic — True, False, and the Excluded Middle◆Law VI · Observer InterferenceWhen the system that monitors health becomes a participant in the system it monitors, observation becomes a failure vector.◆◆ 2025Amazon Kiro — The 13-Hour Outage◆◆ 2025Operation Chrysalis: The Notepad++ Supply Chain Hijack◆◆ 2025Replit Agent — The Vibe Code Wipe◆◆ 2025Shai-Hulud — The npm Worm That Ate Its Own Ecosystem◆◆ 2024Air Canada Chatbot — The Policy That Wasn't◆◆ 2024Change Healthcare — One-Third of US Healthcare, One Missing MFA◆◆ 2024CrowdStrike — The Security Update That Broke the World◆◆ 2024Google Gemini Image Generation — The Six-Day Pause◆◆ 2024XZ Utils — The Two-Year Infiltration◆◆ 20233CX — The Supply Chain That Ate Another Supply Chain◆◆ 2023Amazon Prime Video — The Per-Frame State Machine◆◆ 2023Bing Sydney — The Chatbot That Went Rogue◆◆ 2023Samsung ChatGPT Leak — The Employee Who Pasted the Secret◆EFFODE · LEGE · INTELLEGE◆
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◉ Data IntegrityDesign FlawEXP-025

LEO I — The First Business Computer Bug

When automation amplified errors as effectively as efficiency

1940s–50s · Machine Code · 3 min read
Pattern Classification
Class
◇ Transitive Trust
Sub-pattern
Supply Chain Inheritance
Invariant

When a system inherits trust from a source it did not verify, the attack surface extends to everything that source touches.

This Instance

Third-party code is trusted implicitly because the distribution channel is trusted

Detection Heuristic

If a system grants access, installs code, or executes actions based on the identity of a source rather than the verified content of what that source provides — trust is transitive, and the weakest link in the chain becomes the actual security boundary.

Same Pattern Class
Why It Persists

Every layer of abstraction introduces a new trust boundary. Package managers, CI/CD pipelines, container registries, AI agents — each inherits authority from the layer above without independently verifying it.

This section is being excavated...

Archaeologist's Note

This pattern has been found in applications built by talented developers at respected organizations across every decade of software history. Its presence in a codebase is not a reflection of the developer who wrote it — it is a reflection of what that developer was taught, what tools they had, and the path that was easiest given what they were taught. The goal is not to find fault. The goal is to find the pattern — before it finds you.

Katie's Law: The developers were not wrong. The shortcut was not wrong. The context changed and the shortcut didn't.

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