Gartner Research

Understanding and Implementing Security in Office 365: Exchange Online, SharePoint Online and OneDrive for Business

Published: 28 January 2016

ID: G00275979

Analyst(s): Patrick Hevesi


Organizations about to implement Office 365 have concerns about the product's security. This report gives an overview of Office 365 security capabilities for email and collaboration and their effectiveness. This will help IT to select the appropriate mix of Microsoft and third-party controls.

Table Of Contents


  • Microsoft Data Center and Application Security
  • Exchange Online
  • SharePoint Online and OneDrive for Business
  • Identity and Access Management
  • Network Access
  • Office Clients
  • Office 365 Security Management
  • Strengths
  • Weaknesses


  • Leverage MFA for Administrators and Other High-Privilege Users
  • Consider Leveraging Azure RMS for File-Level Encryption When Required by Specific Use Cases or Compliance
  • Consider BYOK for Azure RMS With SharePoint Online and OneDrive for Business If Required for Compliance
  • Do Not Consider Azure ExpressRoute for Office 365 as a Security Control
  • Augment Office 365 Security With Third-Party Security Solutions to Close Current Gaps
  • Deploy a CASB for Added Visibility and Security for Off-Premises and BYOD Scenarios
  • Strongly Consider Third-Party DLP Solutions Due to Lack of Enterprise Features in SharePoint and OneDrive for Business

The Details

  • Azure RMS and Mobile Clients
  • Cloud Access Security Brokers
  • Appendix

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