# security (safety)

a condition where a thing stays inside its boundary and others are not inside.

- Computed level: L6 (depth in the emergence graph, not abstraction)
- Status: review  ·  Domain: safety  ·  Arena: security

## Emergence
**Emerges from:** [boundary](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-boundary.limit), [persist](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-persist.continue), [inside](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-inside.spatial), [others](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-others.distinct-entities), [condition](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-condition.state)

**Through:** the boundary keeps others out while the thing remains inside, creating a protected condition.

**Novel properties:**
- protected containment
- exclusion of external entities
- persistent integrity

## Examples
- The International Space Station maintains atmospheric pressure within its hull, keeping vacuum outside. *(engineering)*
- Antibodies in human blood identify and neutralize pathogens while preserving self-cells. *(biology)*
- The 2021 Colonial Pipeline ransomware attack briefly breached digital perimeter controls in the US fuel network. *(computing)*

## Used by
- [insurance](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-insurance.financial) (L18)
- [login](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-login.digital) (L12)
- [password](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-password.security) (L11)

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*Canonical: https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-security.safety*  
*Structured data: https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-security.safety.json*  
*Every definition provably resolves to space, time, energy and pattern.*