Audit Domain

Overview#

The Audit domain provides an immutable, tamper-evident audit logging system for digital forensics and evidence management. Using cryptographically verifiable chain-of-custody tracking, it ensures that every interaction with evidence is recorded, linked, and independently verifiable, meeting the rigorous standards required for legal admissibility and regulatory compliance.

Key Features#

• Immutable Audit Logging -- All custody events are append-only with cryptographic chaining, ensuring a tamper-evident record that cannot be altered after creation
• Chain-of-Custody Tracking -- Complete lineage tracking that records who handled evidence, what actions were taken, when they occurred, and why
• Multi-Algorithm Integrity Verification -- Defense-in-depth approach using multiple hash algorithms to protect against algorithm-specific vulnerabilities and future-proof evidence integrity
• Legal Hold Enforcement -- Prevents deletion or modification of evidence during legal proceedings, with support for litigation, regulatory, and internal investigation holds
• Chain Certification -- Legal certification of chain integrity for court admissibility, including expert review, digital signature, and report generation
• Retention Policy Management -- Configurable retention periods with support for archival, deletion, and anonymization actions that respect legal hold constraints
• Advanced Querying and Search -- Full-text search, date range filtering, action type filtering, actor filtering, and flexible sorting across audit logs
• Timeline Visualization -- Chronological event ordering with significant event highlighting and entity type classification for visual audit trail analysis
• Multi-Format Export -- Export audit trails in JSON and CSV formats for analysis, reporting, and compliance documentation
• Statistical Analytics -- Aggregated statistics including event breakdowns by action type and actor, unique evidence and investigation counts, and chain health metrics

Use Cases#

• Evidence management teams maintain a cryptographically verifiable chain of custody for digital evidence, ensuring every access, transfer, and modification is recorded and independently verifiable for court proceedings.
• Compliance officers manage retention policies and legal holds to meet regulatory requirements, with automated archival of aged records while preserving evidence under active legal proceedings.
• Forensic investigators validate chain integrity to confirm that evidence has not been tampered with, receiving an integrity score and detailed validation report suitable for legal certification.
• Auditors search and export detailed audit trails filtered by time period, action type, or actor to generate compliance reports for regulatory bodies.
• Legal teams apply and release legal holds on evidence related to active litigation, with full audit tracking of hold lifecycle events.

Integration#

The Audit domain integrates with the Evidence domain for automatic custody tracking on upload and access, the Investigation domain for investigation-wide audit trails, the User domain for actor attribution and access control, and the Storage domain for hash verification on file retrieval.

Last Reviewed: 2026-02-05