Plan and design DLP policies

Once you understand the importance of protecting sensitive data with data loss prevention (DLP), the next step is to plan and design policies that fit your organization’s needs.

Why careful planning is important

No two organizations are the same, and neither are their data security requirements. When planning for DLP, consider your organization’s specific needs. What kind of sensitive information you handle, where it’s stored, and how it’s shared. A well planned DLP policy prevents accidental data leaks and helps ensure compliance with internal standards without disrupting day-to-day operations.

Steps to plan a DLP deployment

1. Identify stakeholders: Planning and implementing DLP requires input from across the organization. This ensures that policies are comprehensive and reflect both legal requirements and business needs. Common stakeholders include:
   • IT and security teams
   • Compliance officers
   • Legal and risk management teams
   • Data owners and business unit leaders
   Engaging these groups early ensures that your policies cover the right types of sensitive data and align with business processes.
2. Define categories of sensitive information: Once stakeholders are identified, the next step is to define the categories of data your organization must protect. These categories could include:
   • Financial data
   • Personal information
   • Intellectual property
   • Any other sensitive or regulated information
   Knowing what to protect ensures that your DLP policies are designed with the right focus and that critical information doesn’t fall through the cracks.
3. Set clear goals and strategy: With stakeholders and data categories in place, you can establish your goals. These might include reducing accidental sharing of sensitive data, ensuring compliance, or protecting intellectual property. Align your DLP strategy with your business goals to ensure the policies meet both security and operational requirements.
4. Determine where DLP will be applied: DLP policies can be applied across a wide range of platforms. Determine where sensitive information is most likely to be stored, shared, or accessed. Locations include:
   • Exchange Online for email
   • SharePoint and OneDrive for stored and shared files
   • Microsoft Teams for chat and shared documents
   • Office applications like Word, Excel, and PowerPoint
   • Windows 10, Windows 11, and macOS (latest three versions) for endpoint protection
   • Non-Microsoft cloud apps monitored through Microsoft Defender for Cloud Apps
   • On-premises file shares and on-premises SharePoint
   • Microsoft Fabric and Power BI for data analytics and reporting
   Understanding where sensitive data resides and flows will help you decide where to apply DLP policies.