DOC-400-DC v2.4.1 Last Updated: 2026-01-15 Owner: CISO Office

4. Data Classification Framework

Establishes standardized procedures for classifying, handling, storing, and transmitting data across all Aevum Zenth divisions. Ensures regulatory compliance and risk mitigation.

Framework Overview

All data generated, processed, or stored by Aevum Zenth must be classified into one of four tiers based on sensitivity, regulatory requirements, and potential business impact. Classification determines encryption standards, access controls, retention periods, and transmission protocols.

Scope: Applies to all employees, contractors, subsidiaries, and third-party integrators. Covers structured/unstructured data, PII, IP, financial records, health data, and system configurations.

Classification Tiers

Tier 1

Public

Information approved for external distribution. Includes marketing materials, press releases, public financials, and open-source code.

Tier 2

Internal

Operational data for employee use. Internal memos, process documentation, non-sensitive project plans, and internal tooling configs.

Tier 3

Confidential

Restricted to authorized personnel. Customer PII, employee records, financial forecasts, patents, and proprietary algorithms.

Tier 4

Restricted

Critical/crown-jewel data. Executive compensation, merger/acquisition plans, cryptographic keys, government contracts, and unredacted health records.

Handling & Storage Matrix

Data Class Encryption at Rest Encryption in Transit Access Control Retention External Sharing
PUBLIC None required TLS 1.2+ Open / Authenticated Indefinite (if archival value) Approved channels only
INTERNAL AES-256 TLS 1.3 SSO + RBAC (Dept.) 3-7 years (per jurisdiction) Requires Data Owner approval
CONFIDENTIAL AES-256 + HSM wrapping mTLS + End-to-End ABAC + MFA + JIT access 7-15 years (audit trail) NDA-bound, redacted only
RESTRICTED Quantum-Resistant Lattice Dedicated Secure Tunnel PAM + Biometric + 4-Eyes 20+ years / Permanent Strictly prohibited unless legal mandate

Automated Classification & Enforcement

Aevum Zenth utilizes ML-driven DLP (Data Loss Prevention) and metadata tagging across all cloud and on-prem infrastructure to auto-classify and enforce handling policies.

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Zenth SenseAI Scanner

Continuously scans S3, Azure Blob, and on-prem NAS for unclassified files. Auto-applies tags and triggers remediation workflows.

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Policy Enforcement Engine

Blocks unauthorized exports, enforces watermarking on Confidential/Restricted docs, and auto-encrypts endpoints via Zero Trust Network Access (ZTNA).

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Compliance Dashboard

Real-time visibility into classification distribution, exception requests, and audit logs. Accessible via /governance/dashboard.

Exception & Escalation Process

Business units requiring temporary policy relaxation must submit a formal exception request. All exceptions are time-bound, audited, and require CISO or Division Head approval.

  1. Submit via Exception Portal with business justification and risk assessment.
  2. Automated routing to Data Owner → Legal → CISO Office.
  3. Approval grants temporary override (max 90 days, renewable).
  4. Post-exception audit required before data returns to baseline classification.