Microsoft 365 security topics. Start with the control family.
Notes on Cyber Essentials Plus, identity, endpoint management and tenant security. Use the topic to name the problem before changing a setting.
Browse the topics
Each topic names the control owner, the evidence to collect and the practical decision that follows.
Cyber Essentials Plus
Most CE Plus failures are evidence gaps, not exotic findings. Start here when scope, device samples or MFA evidence ownership is unclear.
Identity & access
Identity controls govern most Microsoft 365 access decisions. Start here when Conditional Access, admin roles or MFA exceptions are owned by memory rather than documentation.
Endpoint management
Intune is easy to half-deploy. Start here when device compliance results exist but the team cannot explain why enrolled devices fail or which policies actually apply.
Tenant & Defender
Licensed controls only matter when someone owns them. Start here when Defender, DLP, external sharing or audit evidence is configured but not actively reviewed.
How businesses look for risk
Almost half of UK businesses did nothing to look for cyber risk last year. Each topic above starts with a check you can run.
- Security monitoring tools32%
- Cyber risk assessment30%
- Staff tested, such as mock phishing22%
- Vulnerability audit18%
- Penetration test13%
What is ready before an incident
Named roles and notification guidance come before a formal plan, and a quarter of businesses have that plan.
- Named roles for incidents39%
- Guidance on who to notify34%
- Guidance on reporting externally32%
- Formal incident response plan25%
Read the field notes
Use the latest practical checks when the cluster points to a specific configuration or evidence question.
Questions teams ask first
Which topic should I start with?
Choose the area where ownership or evidence is least clear: access, devices, tenant sharing and mail, or assessment readiness.
Do the notes replace a tenant review?
No. They help frame the first review question. A scoped review is still needed before changing controls in a live tenant.
Related pages
