Page 3 of the DSE Cybersecurity knowledge center, with source-backed guidance and practical next steps.
Source-backed guidance for identity, vulnerability reduction, ransomware readiness, detection, response, and recovery.
Microsoft Entra authentication context can invoke Conditional Access for a sensitive action inside a capable application. Use it to add risk-appropriate step-up without assuming it protects unsupported paths or replaces baseline access policy.
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Microsoft Entra cross-tenant access settings govern inbound and outbound B2B relationships and trust in external MFA or device claims. Inventory real partners, defaults, applications, and lifecycle before broad collaboration becomes the policy.
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Blocking sign-in and revoking refresh tokens are important, but existing access and application sessions can end on different timelines. Run a documented containment workflow and verify effective loss of access across supported services and independent applications.
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Shared mailboxes outlive projects and teams unless someone owns membership, direct sign-in, forwarding, retention, licensing, automation, and closure. Govern each mailbox as a business service, not a permanent bucket of delegated access.
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Retention policies, retention labels, records controls, and eDiscovery holds answer different questions. Route each requirement through legal, records, privacy, workload, license, scope, deployment, validation, exception, and release decisions.
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Group Managed Service Accounts let supported domain services use domain-managed passwords and simplified SPN management. Migration still requires application support, dependency discovery, least privilege, host authorization, staged testing, and rollback.
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AD CS can issue credentials used for authentication, signing, and encryption. Treat certification authorities, templates, enrollment rights, web endpoints, keys, revocation, and recovery as high-value identity infrastructure.
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Windows Credential Guard isolates selected secrets with virtualization-based security, but legacy protocols, delegation, security packages, remote access, firmware, virtualization, and applications can change behavior. Discover and pilot before enforcement.
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Browser extensions can read pages, alter traffic, and retain access long after their original purpose ends. Govern them as software: approve by need and permission, assign an owner, inventory deployment, review change, and remove them predictably.
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A misplaced switch or unexpected bridge can change Layer 2 topology and disrupt a site. Define the intended spanning-tree root, classify ports, apply platform-appropriate protections, monitor topology changes, and test recovery.
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