{"id":7827,"date":"2026-09-07T06:00:00","date_gmt":"2026-09-06T20:00:00","guid":{"rendered":"https:\/\/exigotech.ethub.co\/au\/blogs\/zero-trust-with-microsoft-365\/"},"modified":"2026-10-27T15:22:12","modified_gmt":"2026-10-27T04:22:12","slug":"zero-trust-with-microsoft-365","status":"publish","type":"post","link":"https:\/\/exigotech.ethub.co\/ph\/blog\/zero-trust-with-microsoft-365","title":{"rendered":"Zero Trust with Microsoft 365: How to Build a More Secure Modern Workplace"},"content":{"rendered":"<p>Cybersecurity is no longer about protecting a network perimeter.<\/p>\n<p>Employees work from home, access cloud applications from multiple devices, collaborate with external partners, and share information across Microsoft 365 every day. As a result, the traditional approach of trusting users and devices simply because they are inside the corporate network is no longer enough.<\/p>\n<p>This is where <strong>Zero Trust<\/strong> comes in.<\/p>\n<p>Zero Trust is a security approach based on a simple principle: <strong>never trust, always verify<\/strong>. Every user, device, application, and access request should be validated before access is granted.<\/p>\n<p>At Exigo Tech, we help organisations strengthen their Microsoft environments as their <a href=\"https:\/\/exigotech.ethub.co\/au\/services\/managed-it-services\/managed-cybersecurity-services\"><strong>Managed Intelligence Partner<\/strong><\/a>, using practical Zero Trust strategies that align security with business operations.<\/p>\n        <a class=\"bld-embed-card\" href=\"https:\/\/exigotech.ethub.co\/ph\/blog\/secure-copilot-agents-microsoft-365-e5\">\n            <img decoding=\"async\" src=\"https:\/\/exigotech.ethub.co\/wp-content\/uploads\/2026\/10\/1200-x-675px-secure-copilot-agents-with-m365-blog-26102026-768x432.webp\" alt=\"\">            <div>\n                <div class=\"label\">Artificial Intelligence<\/div>                <h5>How to Secure Microsoft Copilot Agents with Microsoft 365 E5<\/h5>\n            <\/div>\n        <\/a>\n        \n<h2><strong>What Is Zero Trust?<\/strong><\/h2>\n<p>Zero Trust does not mean trusting nothing or blocking everyone.<\/p>\n<p>Instead, it means organisations should avoid automatically trusting users, devices, or applications.<\/p>\n<p>Every access request should be evaluated based on factors such as:<\/p>\n<ul>\n<li>Who is requesting access?<\/li>\n<li>What device are they using?<\/li>\n<li>Where are they connecting from?<\/li>\n<li>What application are they accessing?<\/li>\n<li>What information are they trying to access?<\/li>\n<li>Is the activity considered risky?<\/li>\n<\/ul>\n<h3><strong>Why Zero Trust Matters for Microsoft 365<\/strong><\/h3>\n<p><a href=\"https:\/\/exigotech.ethub.co\/au\/services\/cloud\/microsoft-365\">Microsoft 365<\/a> has become the centre of daily business operations for many organisations.<\/p>\n<p>Employees use:<\/p>\n<ul>\n<li>Outlook<\/li>\n<li>Microsoft Teams<\/li>\n<li>SharePoint<\/li>\n<li>OneDrive<\/li>\n<li>Word<\/li>\n<li>Excel<\/li>\n<li>PowerPoint<\/li>\n<\/ul>\n<p>These applications contain valuable business information.<\/p>\n<p>A compromised Microsoft 365 identity can potentially give attackers access to emails, documents, conversations, customer information, and other sensitive data.<\/p>\n<h3><strong>The Three Core Principles of Zero Trust<\/strong><\/h3>\n<p>Microsoft&#8217;s Zero Trust approach is built around three core principles.<\/p>\n<h4><strong>Verify Explicitly<\/strong><\/h4>\n<p>Every access request should be authenticated and authorised using available information.<\/p>\n<p>This may include:<\/p>\n<ul>\n<li>User identity<\/li>\n<li>Location<\/li>\n<li>Device status<\/li>\n<li>Application<\/li>\n<li>Data sensitivity<\/li>\n<li>Sign-in risk<\/li>\n<\/ul>\n<p>Instead of assuming access is safe, organisations continuously evaluate whether the request should be trusted.<\/p>\n<h4><strong>Use Least-Privilege Access<\/strong><\/h4>\n<p>Users should only receive the access required to perform their job.<\/p>\n<p>This reduces the potential impact of:<\/p>\n<ul>\n<li>Compromised accounts<\/li>\n<li>Insider threats<\/li>\n<li>Credential theft<\/li>\n<li>Accidental data exposure<\/li>\n<\/ul>\n<p>Least privilege also means regularly reviewing permissions and removing access that is no longer required.<\/p>\n<h4><strong>Assume Breach<\/strong><\/h4>\n<p>Zero Trust assumes that a security incident could already be occurring.<\/p>\n<p>Instead of relying solely on prevention, organisations prepare to detect, contain, and respond to threats.<\/p>\n<p>This involves:<\/p>\n<ul>\n<li>Monitoring suspicious activity<\/li>\n<li>Segmenting access<\/li>\n<li>Limiting lateral movement<\/li>\n<li>Protecting sensitive data<\/li>\n<li>Responding quickly to incidents<\/li>\n<\/ul>\n<p>Assuming breach helps organisations reduce the potential impact of a successful attack.<\/p>\n<p><a href=\"\/au\/services\/security\/zero-trust-security-assessment\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-97734\" src=\"https:\/\/exigotech.ethub.co\/wp-content\/uploads\/2026\/09\/cta-zero-trust-with-m365-blog-07092026-01.webp\" alt=\"CTA - Assess Your Zero Trust Readiness\" width=\"971\" height=\"312\" \/><\/a><\/p>\n<h3><strong>Building Zero Trust with Microsoft 365<\/strong><\/h3>\n<p>Microsoft 365 provides several capabilities that can support a <a href=\"https:\/\/exigotech.ethub.co\/ph\/blog\/zero-trust-implementation-guide\">Zero Trust security strategy<\/a>.<\/p>\n<h4><strong>1. Start with Identity Security<\/strong><\/h4>\n<p>Identity is at the centre of modern cybersecurity.<\/p>\n<p>Attackers increasingly target user accounts because a compromised identity can provide access to multiple applications and systems.<\/p>\n<p><a href=\"https:\/\/exigotech.ethub.co\/ph\/blog\/microsoft-entra-id-identity-security\">Microsoft Entra ID<\/a> helps organisations manage identities and control access across Microsoft 365.<\/p>\n<p>Key capabilities include:<\/p>\n<ul>\n<li><a href=\"\/au\/services\/security\/essential-eight\/multi-factor-authentication\">Multi-Factor Authentication (MFA)<\/a><\/li>\n<li>Conditional Access<\/li>\n<li>Single Sign-On (SSO)<\/li>\n<li>Identity Protection<\/li>\n<li>Privileged Identity Management (PIM)<\/li>\n<\/ul>\n<p>Strong identity controls are the foundation of a Zero Trust environment.<\/p>\n<h4><strong>2. Implement Multi-Factor Authentication<\/strong><\/h4>\n<p>Passwords alone are no longer enough.<\/p>\n<p>Phishing, credential theft, password reuse, and other attacks can compromise user credentials.<\/p>\n<p>Multi-Factor Authentication adds another layer of verification before access is granted.<\/p>\n<p>However, organisations should also consider how MFA is implemented.<\/p>\n<p>Modern identity attacks can involve:<\/p>\n<ul>\n<li>MFA fatigue<\/li>\n<li>Adversary-in-the-middle attacks<\/li>\n<li>Token theft<\/li>\n<li>Session hijacking<\/li>\n<\/ul>\n<p>For this reason, organisations should combine MFA with broader identity protection and Conditional Access policies.<\/p>\n<h4><strong>3. Use Conditional Access to Control Access<\/strong><\/h4>\n<p>Conditional Access allows organisations to define rules around how users access Microsoft 365 resources.<\/p>\n<p>Policies can consider factors such as:<\/p>\n<ul>\n<li>User identity<\/li>\n<li>Device compliance<\/li>\n<li>Location<\/li>\n<li>Application<\/li>\n<li>Sign-in risk<\/li>\n<\/ul>\n<p>For example, an organisation may require additional authentication when:<\/p>\n<ul>\n<li>A user signs in from an unfamiliar location<\/li>\n<li>A device does not meet security requirements<\/li>\n<li>The sign-in is considered high risk<\/li>\n<\/ul>\n<p>Conditional Access helps organisations move beyond one-size-fits-all security controls.<\/p>\n<h4><strong>4. Secure Devices Accessing Microsoft 365<\/strong><\/h4>\n<p>Users access Microsoft 365 from laptops, mobile phones, tablets, and other devices.<\/p>\n<p>A compromised or unmanaged device can create a significant security risk.<\/p>\n<p>Microsoft Intune can help organisations manage and secure devices by enforcing policies such as:<\/p>\n<ul>\n<li>Device encryption<\/li>\n<li>Password requirements<\/li>\n<li>Operating system updates<\/li>\n<li>Application controls<\/li>\n<li>Device compliance<\/li>\n<\/ul>\n<p>Conditional Access can then be used to restrict access from devices that do not meet security requirements.<\/p>\n<p>This helps ensure that access decisions consider both the user and the device.<\/p>\n<h4><strong>5. Protect Your Data<\/strong><\/h4>\n<p>Zero Trust should not stop at authentication.<\/p>\n<p>Organisations also need to protect the information users access.<\/p>\n<p><a href=\"https:\/\/exigotech.ethub.co\/ph\/blog\/microsoft-purview-ai-data-governance\">Microsoft Purview<\/a> can support data governance and protection through capabilities such as:<\/p>\n<ul>\n<li>Sensitivity labels<\/li>\n<li>Data classification<\/li>\n<li>Data Loss Prevention (DLP)<\/li>\n<li>Information protection<\/li>\n<li>Insider risk management<\/li>\n<\/ul>\n<p>These controls help organisations understand where sensitive information exists and reduce the risk of inappropriate sharing.<\/p>\n        <a class=\"bld-embed-card\" href=\"https:\/\/exigotech.ethub.co\/ph\/blog\/agentic-ai-for-operations-leaders\">\n            <img decoding=\"async\" src=\"https:\/\/exigotech.ethub.co\/wp-content\/uploads\/2026\/10\/1200-x-675px-agentic-ai-operations-blog-23102026-768x432.webp\" alt=\"\">            <div>\n                <div class=\"label\">Artificial Intelligence<\/div>                <h5>Agentic AI for Operations Leaders: Turning AI into Action<\/h5>\n            <\/div>\n        <\/a>\n        \n<h4><strong>6. Apply Least Privilege to Microsoft 365<\/strong><\/h4>\n<p>Over-permissioned access is a common security problem.<\/p>\n<p>Employees may retain access to:<\/p>\n<ul>\n<li>Old SharePoint sites<\/li>\n<li>Sensitive Teams channels<\/li>\n<li>Shared mailboxes<\/li>\n<li>Business applications<\/li>\n<li>Administrative functions<\/li>\n<\/ul>\n<p>Over time, these permissions can create unnecessary risk.<\/p>\n<p>Organisations should regularly review:<\/p>\n<ul>\n<li>User access<\/li>\n<li>Administrative privileges<\/li>\n<li>Application permissions<\/li>\n<li>Guest accounts<\/li>\n<li>External sharing<\/li>\n<\/ul>\n<p>The goal is to ensure people have access to what they need\u2014and nothing more.<\/p>\n<h4><strong>7. Protect Against Email-Based Threats<\/strong><\/h4>\n<p>Email remains one of the most common entry points for cyberattacks.<\/p>\n<p>Phishing emails can lead to:<\/p>\n<ul>\n<li>Credential theft<\/li>\n<li>Malware<\/li>\n<li>Business email compromise<\/li>\n<li><a href=\"https:\/\/exigotech.ethub.co\/ph\/blog\/ransomware-preparedness-guide\">Ransomware<\/a><\/li>\n<\/ul>\n<p>Microsoft Defender for Office 365 can provide additional protection against email-based threats.<\/p>\n<p>Capabilities can include protection against:<\/p>\n<ul>\n<li>Phishing<\/li>\n<li>Malicious links<\/li>\n<li>Dangerous attachments<\/li>\n<\/ul>\n<p>However, email security should work alongside identity controls and employee awareness training.<\/p>\n<h4><strong>8. Monitor and Respond to Threats<\/strong><\/h4>\n<p>Zero Trust is not a one-time implementation.<\/p>\n<p>Organisations need continuous visibility into their environment.<\/p>\n<p>Security teams should monitor for:<\/p>\n<ul>\n<li>Suspicious sign-ins<\/li>\n<li>Unusual user behaviour<\/li>\n<li>Compromised devices<\/li>\n<li>Privilege changes<\/li>\n<li>Data access anomalies<\/li>\n<\/ul>\n<p>Microsoft Defender and other security tools can help organisations detect and investigate threats.<\/p>\n<p>For businesses without a dedicated internal security team, managed security services can provide additional monitoring and response capabilities.<\/p>\n<h3><strong>Common Zero Trust Mistakes to Avoid<\/strong><\/h3>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-97738\" src=\"https:\/\/exigotech.ethub.co\/wp-content\/uploads\/2026\/09\/assets-zero-trust-with-m365-blog-07092026.webp\" alt=\"Common Zero Trust Mistakes to Avoid\" width=\"1022\" height=\"218\" \/><\/p>\n<p>Many organisations understand the concept of Zero Trust but struggle with implementation.<\/p>\n<p>Common mistakes include:<\/p>\n<h4><strong>Treating Zero Trust as a Single Product<\/strong><\/h4>\n<p>Zero Trust is a security strategy, not a product.<\/p>\n<p>Implementing one security tool does not automatically create a Zero Trust environment.<\/p>\n<h4><strong>Enabling MFA and Stopping There<\/strong><\/h4>\n<p>MFA is important, but modern attackers increasingly target authentication sessions, tokens, and users themselves.<\/p>\n<p>Organisations should combine MFA with Conditional Access and continuous monitoring.<\/p>\n<h4><strong>Ignoring Data Security<\/strong><\/h4>\n<p>Strong authentication does not prevent users from accidentally sharing sensitive information.<\/p>\n<p>Data classification and protection should be part of the strategy.<\/p>\n<h4><strong>Applying Policies Without Planning<\/strong><\/h4>\n<p>Overly restrictive policies can disrupt employees and business operations.<\/p>\n<p>Organisations should test policies carefully and implement them in stages.<\/p>\n<h2><strong>A Practical Zero Trust Roadmap for Microsoft 365<\/strong><\/h2>\n<p>Building Zero Trust does not need to happen overnight.<\/p>\n<p>A phased approach can help organisations prioritise the highest risks.<\/p>\n<h3><strong>Phase 1: Assess Your Current Environment<\/strong><\/h3>\n<p>Review:<\/p>\n<ul>\n<li>Microsoft 365 configuration<\/li>\n<li>Identity security<\/li>\n<li>MFA coverage<\/li>\n<li>User permissions<\/li>\n<li>Device security<\/li>\n<li>Data protection<\/li>\n<\/ul>\n<p>Identify the most significant gaps.<\/p>\n<h3><strong>Phase 2: Strengthen Identity<\/strong><\/h3>\n<p>Focus on:<\/p>\n<ul>\n<li>MFA<\/li>\n<li>Conditional Access<\/li>\n<li>Identity Protection<\/li>\n<li>Privileged access<\/li>\n<\/ul>\n<p>Identity should be a priority because it is one of the most common attack targets.<\/p>\n        <a class=\"bld-embed-card\" href=\"https:\/\/exigotech.ethub.co\/ph\/blog\/microsoft-365-security-for-healthcare\">\n            <img decoding=\"async\" src=\"https:\/\/exigotech.ethub.co\/wp-content\/uploads\/2026\/10\/1200-x-675px-m365-for-heatlhcare-blog-21102026-768x432.webp\" alt=\"\">            <div>\n                <div class=\"label\">Security<\/div>                <h5>Microsoft 365 Security for Healthcare Providers: Protecting Patient Data and Business Operations<\/h5>\n            <\/div>\n        <\/a>\n        \n<h3><strong>Phase 3: Secure Devices and Applications<\/strong><\/h3>\n<p>Ensure devices accessing business systems meet defined security requirements.<\/p>\n<p>Review application access and third-party permissions.<\/p>\n<h3><strong>Phase 4: Protect Sensitive Data<\/strong><\/h3>\n<p>Classify sensitive information and implement appropriate data protection policies.<\/p>\n<p>Review external sharing and data access permissions.<\/p>\n<h3><strong>Phase 5: Continuously Monitor and Improve<\/strong><\/h3>\n<p>Security environments constantly change.<\/p>\n<p>Regularly review policies, investigate alerts, and adapt security controls as new threats emerge.<\/p>\n<h2><strong>How Exigo Tech Helps<\/strong><\/h2>\n<p>At Exigo Tech, we help organisations take a practical approach to Zero Trust security.<\/p>\n<p>As your <strong>Managed Intelligence Partner<\/strong>, we help assess your current environment, identify security gaps, and build a roadmap that aligns with your business requirements.<\/p>\n<p>Our capabilities include:<\/p>\n<ul>\n<li>Zero Trust Cybersecurity Assessments<\/li>\n<li><a href=\"https:\/\/exigotech.co\/lp\/managed-services-health-check\/\" rel=\"nofollow noopener\" target=\"_blank\">Microsoft 365 Security Health Checks<\/a><\/li>\n<li>Microsoft Entra ID and identity security<\/li>\n<li>Multi-Factor Authentication implementation<\/li>\n<li>Conditional Access configuration<\/li>\n<li>Microsoft Intune device management<\/li>\n<li>Microsoft Defender security solutions<\/li>\n<li>Microsoft Purview data protection<\/li>\n<li><a href=\"https:\/\/exigotech.ethub.co\/au\/solutions\/managed-security-as-a-service-msaas\">Managed Security as a Service (MSaaS)<\/a><\/li>\n<li>Ongoing security monitoring and consulting<\/li>\n<\/ul>\n<p>Our approach focuses on helping organisations improve security without unnecessarily increasing complexity.<\/p>\n<p><a href=\"\/au\/contact\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-97730\" src=\"https:\/\/exigotech.ethub.co\/wp-content\/uploads\/2026\/09\/cta-zero-trust-with-m365-blog-07092026-02.webp\" alt=\"CTA - Strengthen Your Microsoft 365 Security\" width=\"1003\" height=\"312\" \/><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Cybersecurity is no longer about protecting a network perimeter. Employees work from home, access cloud applications from multiple devices, collaborate with external partners, and share information across Microsoft 365 every day. As a result, the traditional approach of trusting users and devices simply because they are inside the corporate network is no longer enough. This [&hellip;]<\/p>\n","protected":false},"author":0,"featured_media":7832,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[47],"tags":[213,310],"class_list":["post-7827","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-security","tag-microsoft-365","tag-zero-trust"],"acf":[],"_links":{"self":[{"href":"https:\/\/exigotech.ethub.co\/ph\/wp-json\/wp\/v2\/posts\/7827","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/exigotech.ethub.co\/ph\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/exigotech.ethub.co\/ph\/wp-json\/wp\/v2\/types\/post"}],"replies":[{"embeddable":true,"href":"https:\/\/exigotech.ethub.co\/ph\/wp-json\/wp\/v2\/comments?post=7827"}],"version-history":[{"count":1,"href":"https:\/\/exigotech.ethub.co\/ph\/wp-json\/wp\/v2\/posts\/7827\/revisions"}],"predecessor-version":[{"id":7831,"href":"https:\/\/exigotech.ethub.co\/ph\/wp-json\/wp\/v2\/posts\/7827\/revisions\/7831"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/exigotech.ethub.co\/ph\/wp-json\/wp\/v2\/media\/7832"}],"wp:attachment":[{"href":"https:\/\/exigotech.ethub.co\/ph\/wp-json\/wp\/v2\/media?parent=7827"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/exigotech.ethub.co\/ph\/wp-json\/wp\/v2\/categories?post=7827"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/exigotech.ethub.co\/ph\/wp-json\/wp\/v2\/tags?post=7827"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}