Microsoft Purview DLP & Data Protection
Protect corporate data across Microsoft 365, Teams, SharePoint, and Power Platform. Configure sensitivity labels, DLP policies, and insider risk rules.
Core Service Capabilities
Designed and delivered by experienced Australian Microsoft solution architects.
Data Loss Prevention (DLP)
Enforce strict M365 DLP policies to block sensitive financial, HR, and credit card data exfiltration across emails and cloud apps.
DLP • EncryptionSensitivity Label Auto-Labeling
Automatically classify and encrypt documents upon creation based on content keywords, regex patterns, or location.
Purview • ClassificationInsider Risk Management
Detect and remediate risky user activities, unexpected bulk downloads, or data exfiltration attempts before breach.
Insider Risk • AuditSensitivity Label Hierarchy & Persistent Cryptographic Protection
Securing enterprise data against accidental leakage or malicious exfiltration requires persistent, document-level protection. We architect Microsoft Purview Information Protection (MIP) sensitivity label taxonomies that enforce encryption, access restrictions, and watermarking directly into Office documents and PDFs wherever they travel.
Four-Tier Label Taxonomy Architecture
We design intuitive, standardized label structures preventing user decision paralysis. Clear label scopes guide end users while automated policies classify high-risk content behind the scenes.
- Tier 1: Public: Unrestricted business data intended for public distribution (marketing assets, press releases).
- Tier 2: General: Default day-to-day internal business communications with no external blocking.
- Tier 3: Confidential: Encrypted corporate data restricted to authenticated organisation members and verified partners.
- Tier 4: Highly Confidential: Strict AES-256 encryption with dynamic visual watermarks, disabling copy/paste, print, and forwarding.
Server-Side Auto-Labeling Engines
Relying solely on employee manual classification guarantees gaps. We configure automated server-side classification scanning SharePoint Online libraries, OneDrive accounts, and Exchange mailboxes at rest.
- Australian Sensitive Info Types (SIT): Pre-built matching for Tax File Numbers (TFN), Medicare cards, and passport IDs.
- Threshold Triggers: Escalating encryption automatically when more than 5 customer records are detected.
- Simulation Mode: Running scans in audit-only mode to verify label accuracy before enforcing encryption.
Endpoint DLP, Exact Data Match & AI Leakage Defense
Securing cloud storage is insufficient if employees can download sensitive spreadsheets and copy customer data into unapproved generative AI tools or personal USB drives. We extend Purview DLP down to Windows and macOS endpoints.
Endpoint Egress Controls
Block copying sensitive files to unencrypted USB drives, uploading to unapproved personal cloud apps (Dropbox, Google Drive), and copying data via clipboard to unauthorized browser sessions.
Exact Data Match (EDM)
We upload cryptographically hashed customer tables. Purview triggers only when specific customer names, account numbers, and addresses appear together, cutting false-positive alerts by over 90%.
Generative AI Web Guards
Prevent employees from pasting confidential intellectual property, code, or personal information into public AI websites (e.g. ChatGPT, Claude) through Microsoft Edge native DLP policy enforcement.
Australian Privacy Principles (APP 11) & Essential Eight
Under Australian Privacy Principle 11 (APP 11), Australian organisations are legally mandated to take "reasonable steps" to protect personal information from misuse, interference, loss, and unauthorized access. Purview DLP delivers verifiable technical controls fulfilling these statutory duties.
Verifiable OAIC APP 11 Technical Steps
Our DLP architecture provides verifiable audit evidence demonstrating that personal records containing Australian TFNs, Medicare data, and banking details are encrypted both in transit and at rest, restricted by least-privilege RBAC, and protected against unauthorized external transmission.
Direct alignment with Office of the Australian Information Commissioner (OAIC) security guidance.
Notifiable Data Breaches (NDB) Readiness
In the event of an attempted data spill, Purview provides immediate forensic timeline reporting detailing exactly which accounts, files, and external IP addresses were involved, enabling your legal and security teams to satisfy mandatory 30-day NDB scheme reporting windows.
Integrated with Microsoft Sentinel for automated incident orchestration.
Four-Stage Purview DLP Deployment Framework
We deploy Microsoft Purview DLP through a phased delivery methodology that prioritizes risk reduction while avoiding disruption to legitimate business workflows:
Sensitive Data Discovery & Label Taxonomy Design
Audit existing file shares, SharePoint sites, and email repositories. Design a business-aligned 4-tier sensitivity label taxonomy and encryption schema.
Policy Modeling & Simulation Testing
Deploy DLP policies in test/simulation mode. Analyze trigger logs, calibrate confidence thresholds, and eliminate false-positive alerts.
Endpoint & Cloud DLP Policy Enforcement
Transition policies to active enforcement with user education tooltips and business justification overrides across cloud and endpoint devices.
SOC Incident Triage & Operational Handover
Configure incident alerts, establish alert triage workflows for your security team, and deliver comprehensive administrator runbooks.
Technical Prerequisites & Licensing
Before initiating a Microsoft Purview DLP deployment, confirm tenant licensing entitlements:
Acceptance Deliverables Checklist
- Sensitivity label hierarchy and publishing policy documentation
- Calibrated DLP policy rules with zero-business-disruption validation logs
- Endpoint DLP device onboarding and browser extension enforcement guide
- Security Operations Center (SOC) incident response runbook
Related Enterprise Security & Governance Practices
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