US-204: Document Upload & Antivirus Scan¶

1. Story Title¶

Secure employee document upload with antivirus scanning

2. Context / Background¶

Documents (contracts, IDs) must be ingested securely and scanned before availability.

3. User Persona¶

Primary: Priya – HR Manager Secondary: Employee (self-upload limited types)

4. Problem Statement¶

Manual document exchange increases security risk and lacks audit trail.

5. Desired Outcome¶

HR / employee uploads file → scanned asynchronously → stored encrypted with status (Pending, Clean, Infected) & clean files accessible via signed URL.

6. Business Value¶

Reduces security exposure; creates centralized auditable repository.

7. Scope (In / Out)¶

In: upload endpoint, size/type validation, scan job, status tracking, signed URL retrieval. Out: Versioning, bulk upload, OCR, preview rendering.

8. Acceptance Criteria (BDD)¶

Scenario: Successful clean upload
  Given a PDF under size limit
  When HR uploads document
  Then status is Pending
  And after scan completes status becomes Clean
  And signed URL can be requested

Scenario: Virus detected
  Given a malicious file
  When upload occurs
  Then status becomes Infected
  And file not accessible via signed URL
  And notification event emitted

Scenario: Unauthorized tenant access
  Given document belongs to tenant A
  When user from tenant B requests URL
  Then access is denied

Scenario: Oversized file rejected
  Given file exceeds size limit
  When upload attempted
  Then validation error returned

9. UX Notes / References¶

Upload component with progress; status badge list; retry for infected removal (future).

10. Data / Domain Model Impact¶

Document entity: id, tenantId, ownerId, type, size, status, storageKey, createdAt.

11. NFR Touchpoints¶

Security: antivirus scan isolation; signed URLs expire quickly.
Performance: scan turnaround p95 < 30s.
Observability: DocumentUploaded, DocumentScanCompleted events.

12. Dependencies¶

Document Service adapter; object storage; event publisher.

13. Risks & Mitigations¶

Risk	Impact	Probability	Mitigation
Slow scanning backlog	Delayed availability	Medium	Parallel scanning workers + queue metrics
False positive infection	User frustration	Low	Option for manual override flow (later)

14. Estimation Support¶

Upload API & validation
Scan job integration
Status polling
Signed URL retrieval logic

15. Analytics / Success Metrics¶

Average scan time; infection rate; upload success vs failures.

16. Rollout / Release Strategy¶

Enable for HR-only; expand to employee self-upload after stability.

17. Definition of Ready Checklist¶

Size & type limits agreed
Scan engine chosen

18. Definition of Done Checklist¶

All scenarios covered by tests
Events visible
Storage encryption verified

19. Open Questions¶

Retention period for infected files?
Need content-type detection vs extension only?

Version: 1.0