Unbounded Risky & Impaired Operation¶
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Useful but hazardous activity has direct access to the live system, or a fault leaves the system active without a restricted state that contains consequences and supports diagnosis.
27 mechanisms across 3 solution archetypes. This is a recurring problem pattern within Hazard Exposure & Uncontained Harm; the mechanisms below inherit it from the primary archetype they instantiate.
- Automatic Shutdown — Automated control logic that stops or suspends operation when anomalies or hazardous conditions are detected.
- Containment on Alarm — A procedure or automation that quarantines, isolates, blocks, or closes off a hazard when an alarm occurs — walling off the affected part while the rest keeps running.
- Dead-Man Switch — A mechanism that requires a continuous human presence signal and enters a safe state when that signal disappears.
- Diagnostic Mode — Keeps inspection, testing, and instrumentation alive while blocking production, actuation, and public-facing output, so a fault can be understood before it is touched.
- Emergency Stop — A user-accessible control that forces immediate stop or safe-state entry when continuation is hazardous.
- Fail-Closed or Fail-Open Design — A design method that chooses whether failure should block or release a boundary based on which default minimizes harm.
- Feature-Flag Disablement — Disables one specific software behavior or integration behind a runtime switch — without shutting down the rest of the service — and records who flipped what, so it can be reversed in seconds.
- Lab Containment Space — Holds hazardous material behind physical barriers and interlocks so work can proceed without uncontrolled release.
- Limited Service Mode — Keeps a minimal, low-risk subset of service available to users while suspending the risky functions, so the system degrades to a smaller offering instead of going dark.
- Limp-Home Mode — Permits just enough constrained operation to reach a safe place or endpoint while disabling performance, so the system can limp to safety rather than stop dead where it failed.
- Maintenance Mode — Declares a bounded window in which normal activity is suspended so authorized repair or inspection can proceed safely, with a defined start, end, and notice to users.
- Manual Supervision Mode — Routes actions that are normally automated through a human reviewer, so a person approves each consequential step while the system's autonomy can't be trusted.
- Privilege Scope Restriction — Narrows who may act and what they may do during an impaired state, shrinking authority to the least privilege the situation genuinely requires.
- Quarantine Mode — Isolates a suspect element from the rest of the system so it cannot spread damage, while still allowing controlled observation and remediation of the isolated part.
- Read-Only Mode — Allows viewing and retrieval while blocking every write and irreversible state change, so data integrity is protected when the system can't be trusted to change state safely.
- Regulatory Sandbox — Grants a novel product a time-boxed license to operate under caps, supervision, and reporting before general approval.
- Safe Mode — A restricted operating mode that leaves only safe capabilities available for diagnosis, preservation, or recovery.
- Safe Play Space — A facilitated space governed by consent and norms where people can practice or err without real-world reputational cost.
- Safe-Mode Banner or Indicator — Makes the restricted status unmistakably visible so users, operators, and downstream systems never mistake safe mode for normal operation.
- Software Execution Sandbox — Confines untrusted code to a least-authority runtime so it can execute while the host and its data stay out of reach.
- Staged Capability Restore — Restores blocked capabilities one validated step at a time, so full operation resumes only as fast as evidence confirms each stage is safe, with rollback if a stage misbehaves.
- Staging Environment — Runs a release against a production-like replica before promotion, so integration failures surface off the live system.
- Synthetic Data Testbed — Swaps sensitive live data for a generated stand-in so pipelines and models can be exercised without exposing real records.
- Test Market — Launches a product into a bounded slice of the real market to gather demand evidence before a full rollout.
- Training Simulator — Lets people rehearse high-stakes action in a synthetic world where instructors inject scenarios and mistakes stay fictional.
- Trip Switch or Circuit Trip — A threshold-triggered device that physically disconnects or interrupts energy or flow the moment a limit is crossed, converting abnormal continuation into a bounded safe state.
- Watchdog Timer — A timer that expects periodic confirmation from a controller and triggers reset, shutdown, or safe mode when confirmation stops.