# Audit Layer

The Audit Layer records all security-relevant events within overra. Containment without traceability is incomplete. Every authorization attempt, verification result and state transition is recorded in an append-only log. Auditability ensures transparency, accountability and forensic clarity.

***

### Logging Objectives

**The Audit Layer is designed to:**

* Provide traceable event history
* Record both successful and failed authorizations
* Preserve state transition records
* Enable post-incident analysis
* Maintain deterministic transparency

Logging is not optional. It is a foundational system component.

***

### Logged Event Types

**The system records structured entries for:**

#### Authorization Events

* Authorization request received
* Signature verification result
* Authority match result
* Nonce validation result
* Expiration validation result

#### State Transitions

* NORMAL → CONTAINED
* CONTAINED → NORMAL

#### Enforcement Execution

* Enforcement initiated
* Enforcement completed
* Enforcement failure (if applicable)

Each entry includes:

* Timestamp
* Event type
* Result status
* Reference identifier (where applicable)

***

### Append-Only Design

Audit logs are append-only.

Entries are:

* Written sequentially
* Not editable
* Not deletable through the dashboard

This ensures historical integrity.

Overra does not support silent modification of logs.

***

### Local Storage Model

Audit logs are stored locally within the agent’s data directory.

This ensures:

* Independence from centralized services
* Persistence across restarts
* Operational continuity during network disruption

Logs remain accessible even if the dashboard is unavailable.

***

### Transparency by Default

Both successful and rejected authorization attempts are recorded.

Rejected requests are not hidden.

This ensures:

* Visibility into failed or malicious attempts
* Clear incident timelines
* Accurate forensic reconstruction

Auditability strengthens trust.

***

### Security Considerations

The Audit Layer does not:

* Transmit logs to external services by default
* Rely on centralized storage
* Permit remote log manipulation

Future integrations may support structured export formats, but local log integrity remains primary.

***

### Audit Guarantees

The Audit Layer guarantees:

* Every state transition is traceable
* Every authorization attempt is recorded
* No silent containment occurs
* Historical data persists across sessions

Containment without audit would be discretionary.

Overra ensures containment remains verifiable and accountable.

***

### Layer Summary

The Audit Layer completes the containment model.

Authorization is verified.\
Enforcement is deterministic.\
Events are recorded.

Security infrastructure must be observable.

Overra ensures that every containment action leaves a traceable record.


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://overra.gitbook.io/overra-docs/architecture-technical-core/audit-layer.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.