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MICROSOFT 365 SECURITY ASSESSMENT

Consultant-led assessment of Microsoft 365 security across Entra ID, Conditional Access, Exchange, Teams, SharePoint and OneDrive, going beyond Secure Score to examine how controls are configured and operate in practice.

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OVERVIEW

Krypsys provides technical security assessments of Microsoft 365 environments, focusing on the identity, authentication, privilege and collaboration controls that protect the tenant.

Microsoft 365 contains a large number of interconnected security settings across Entra ID, Exchange Online, Teams, SharePoint, OneDrive and other services. Reviewing individual settings in isolation does not always show how those controls work together, so our approach considers the tenant as a whole and the practical security impact of the configuration in place.

The review combines configuration analysis with consultant-led investigation and, where useful, hands-on validation using designated test accounts. This allows us to confirm how controls behave from the perspective of a normal user rather than relying entirely on administrative settings or automated assessment tools.

Microsoft Secure Score and other Microsoft security recommendations provide useful context, but they are only one input. Our review goes beyond Secure Score to examine how controls are configured, how they interact and whether they provide the level of protection intended.

The work is informed by recognised security benchmarks and guidance, including the CIS Microsoft 365 Foundations Benchmark, Microsoft security recommendations and relevant NCSC guidance. These provide a useful baseline, but recommendations are considered in the context of the organisation's environment, licensing, operational requirements and existing security controls.

The service is also well suited to organisations migrating to Microsoft 365 from other platforms, including Google Workspace or on-premises services. Reviews can be carried out before go-live, during a phased migration or once the new environment is established, helping identify gaps introduced through coexistence, inherited configuration or temporary migration arrangements.

Particular attention is given to identity and access controls, including Conditional Access, multi-factor authentication, authentication methods, privileged roles and the controls governing external users and applications. We also review the security configuration of the Microsoft 365 services in use and identify areas where access, sharing or administrative permissions may be broader than intended.

TYPICAL AREAS COVERED

We can also validate whether apparently secure configurations can be bypassed or used in ways that introduce additional risk. This may include testing authentication flows, user permissions or access to Microsoft 365 services using designated standard-user accounts.

The objective is not to produce a list of every possible hardening recommendation. Findings are reviewed by a consultant and prioritised according to the exposure they create within the customer's environment, with general improvement opportunities kept separate from more significant security issues.

The final report provides clear evidence for each finding, an explanation of the associated risk and proportionate remediation advice. Where a control cannot be conclusively determined from the available evidence, this is stated clearly rather than being presented as a confirmed weakness.

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