xDev Asia

Security architecture cho POD platform — authn/authz, API security, IP protection, DMCA workflow, plagiarism detection, compliance (GDPR, PCI-DSS, accessibility).

Kiến trúc Hệ thống Fashion Design & Print-on-Demand — Từ Domain Analysis đến Production

Phần 7: Operations, Security & Scale

xdev.asia

1. Security Baseline

Identity Layer
  - OAuth2/OIDC
  - MFA for admin/finance
  - RBAC + scoped tokens

API Layer
  - Rate limiting
  - WAF + bot protection
  - Request signing (webhooks)

Data Layer
  - Encryption at rest (KMS)
  - TLS in transit
  - Secrets rotation

2. Authorization Model

type Role = 'owner' | 'designer' | 'operator' | 'finance' | 'support' | 'viewer';

type Permission =
  | 'design:write'
  | 'product:publish'
  | 'order:manage'
  | 'payout:approve'
  | 'moderation:review'
  | 'security:audit';

interface AccessPolicy {
  role: Role;
  permissions: Permission[];
  resourceScope: 'shop' | 'org' | 'global';
}

3. API Security

Per-client rate limit + burst control
API key rotation + scope restrictions
HMAC signature verification cho webhooks
Idempotency key cho endpoints tài chính

4. IP Protection cho Designs

Upload design
  -> perceptual hash
  -> CLIP embedding similarity search
  -> trademark text scan (OCR)
  -> risk score
  -> allow / review / block

function ipRiskScore(input: {
  similarity: number;
  trademarkHit: boolean;
  bannedKeywordHit: boolean;
}): number {
  let score = 0;
  if (input.similarity > 0.9) score += 50;
  if (input.trademarkHit) score += 35;
  if (input.bannedKeywordHit) score += 20;
  return Math.min(score, 100);
}

5. DMCA / Takedown Workflow

Claim received
  -> validate claimant identity
  -> locate listings/designs
  -> temporary unpublish
  -> notify seller/designer
  -> counter-notice window
  -> final decision + audit log

Track SLA xử lý claim
Lưu audit trail đầy đủ để phục vụ legal

6. Compliance Matrix

Framework	Scope	Actions
GDPR	PII EU users	Consent, data deletion, data export
PCI-DSS	Payments	Tokenization, no raw card storage
COPPA	Children data	Age controls, parental consent
Accessibility (ADA/WCAG)	Storefront	Keyboard nav, contrast, alt text

7. Security Observability

SIEM integration cho auth anomalies
Alert brute-force/login spikes
Track webhook signature failures
Quarterly pen-test + dependency audit

8. Tổng kết

Security by design cần đi cùng mọi domain của platform
IP protection là yếu tố sống còn trong POD
DMCA workflow cần minh bạch, có audit log đầy đủ
Compliance không chỉ legal, còn ảnh hưởng trust và khả năng scale quốc tế

Bài 24: Security, IP Protection & Compliance