Gartner Research

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

Published: 23 May 2017

ID: G00317346

Analyst(s): Patrick Hevesi


Organizations have security concerns as they are planning or rolling out Office 365. To help technical professionals select the appropriate mix of Microsoft and third-party controls, this report assesses Office 365's security capabilities for email and collaboration.

Table Of Contents


  • Basic Security
    • Exchange Online Protection
    • SharePoint Anti-Malware
  • Advanced Security
    • Exchange Online Advanced Threat Protection
    • Advanced Threat Protection
    • Advanced Security Management
    • Advanced Threat Analytics
    • Threat Intelligence
  • Identity and Access Management
    • Multifactor Authentication
    • Administrator Roles Required for Security
    • Conditional Access
    • Azure AD Identity Protection
    • Azure AD Privileged Identity Management
  • Encryption
    • S/MIME Encryption
    • Azure Rights Management
    • Office 365 Message Encryption
  • Data Protection
    • Azure Information Protection
    • Data Loss Prevention in Exchange
    • Data Loss Prevention in SharePoint
    • Advanced Data Governance
  • Intune
    • Risk-Based Conditional Access
  • Network Access
  • Office Clients
    • Office
    • Outlook
    • OneDrive for Business
  • Office 365 Security Management
    • Administration Consoles
    • Office 365 Management Activity API
    • Office 365 Secure Score
  • Audit and Logging
    • Advanced eDiscovery
    • Customer Lockbox
  • Strengths
  • Weaknesses


  • Leverage MFA, Azure AD PIM and Azure AD Identity Protection for Administrators and Other High-Privilege Users
  • Deploy ASM, CAS or a Third-Party CASB for Added Visibility and Security in Off-Premises and BYOD Scenarios
  • Evaluate AIP, CAS or Third-Party DLP Solutions to Fill the Enterprise-Feature Gaps in SharePoint and OneDrive for Business
  • Deploy ATP's Sandboxing and URL-Scanning Capabilities
  • Consider BYOK or HYOK 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

The Details

  • Cloud Access Security Brokers
  • Microsoft Data Center and Application Security

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