Audit Logging & Compliance¶
Definition¶
Immutable, comprehensive logging of all eKYC operations — required for regulatory audit, fraud investigation, and compliance demonstration.
What Must Be Logged¶
| Event | Details Logged |
|---|---|
| Verification initiated | Session ID, timestamp, client, user identifier |
| Document processed | Document type, OCR results, forensic scores, authenticity decision |
| Face processed | Liveness score, match score, decision |
| Screening performed | Sanctions/PEP results, data source, timestamp |
| Decision made | Auto-approve/reject/review, reason, model versions, scores |
| Manual review | Agent ID, decision, reason, duration |
| Data access | Who accessed what biometric data, when, why |
| Data deletion | What was deleted, when, by whom/automation |
Log Requirements¶
| Requirement | Implementation |
|---|---|
| Immutability | Write-once storage (S3 Object Lock, WORM) |
| Retention | 5+ years (matching AML record-keeping) |
| Searchability | Indexed for quick regulatory query response |
| Tamper evidence | Hash chains or blockchain-based integrity verification |
| Access control | Only compliance/audit team can query full logs |
Key Takeaways¶
Summary
- Every verification decision must be logged with full audit trail — regulatory requirement
- Logs must be immutable — prevent tampering after the fact
- 5-year minimum retention aligned with AML record-keeping requirements
- Data access logging is critical for GDPR/DPDP compliance — prove who accessed biometric data