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Conclusion: The Path Toward Cyber Resilience
It should be clear by now that counting on obscurity to provide security is naïve, and limiting your defenses to Microsoft’s native
security mechanism. Instead, companies should seek to strengthen their email fortifications as a key element of a larger and more
comprehensive strategy of cyber resilience, and would be well advised to take the following steps:
1. Make an objective assessment of Microsoft 365’s security capabilities and limitations with regard to your organization’s business
needs and risk tolerance.
2. Investigate how third-party data protection solutions can enhance the security features in Microsoft 365 and compensate for their
3. Adopt a defense in depth framework for integrating best-of-breed third-party applications with Microsoft’s native security facilities.
4. Evaluate potential vendors for critical capabilities including:
» Effective spam and phishing detection with a low false negative rate
» Enhanced spoofing defenses that encompass lookalike and soundalike domains
» Robust safe attachment inspection that includes such techniques as recursive analysis and deep content inspection
» Dynamic site analysis for identifying potential URL-based threats
» The ability to support and operate effectively in both cloud-based and on-premises environments
» A redundant architecture that supports uninterrupted business continuity
» Point-in-time backup and recovery
» Advanced e-discovery and search capabilities
Microsoft 365 has become the de facto standard for business email and collaboration, but for enterprise customers this ubiquity
also means heightened risk. Despite a robust set of native security features, gaps and limitations to Microsoft’s email defenses leave
many businesses vulnerable to a crippling data breach or cyber attack. Deploying suitable third-party solutions within a best-of-breed,
defense in depth framework, however, can compensate for these deficiencies and fortify a company’s defenses against the growing
onslaught of cyber intrusions.