Many small businesses use Microsoft 365 every day, but few regularly check how secure their environment actually is. Microsoft Secure Score gives you a practical way to measure your security posture and see what to improve next. It acts like a security report card for your Microsoft environment, with recommendations based on your current setup and configuration.
For Perth SMBs, this matters because most risk doesn’t come from one dramatic failure. It usually comes from small gaps: weak identity controls, admin accounts that have too much access, devices that aren’t managed properly, or email protections that were never fully turned on.
What Microsoft Secure Score does
Microsoft Secure Score is built into the Microsoft Defender ecosystem and helps organisations assess, track, and improve their security posture. It gives you a score and a set of recommended actions, so you can focus on the biggest improvements first instead of guessing where to start.
The score looks at areas such as:
- Identity and access.
- Device security.
- Data protection.
- Apps and collaboration security.
It also helps benchmark your environment over time, so you can see whether your changes are making the tenant stronger.
Why it matters
A low or unchanged Secure Score often means there are easy wins still sitting on the table. Microsoft highlights the actions that will improve your posture, which can help reduce exposure without making life harder for staff. For SMBs, that is especially useful because you usually want stronger protection without adding unnecessary complexity.
Some of the most common high-impact improvements include:
- Enabling MFA for all users, especially admins.
- Disabling legacy authentication.
- Tightening conditional access.
- Improving endpoint protection.
- Turning on better email and attachment protections.
How to improve it
Start with the highest-impact items that are also low-friction for users. Microsoft’s guidance and industry best-practice articles consistently point to MFA, conditional access, admin privilege reduction, and email protection as strong first steps. These are often the changes that lift both your score and your real-world protection.
A good approach is:
- Review your current score.
- Sort recommendations by impact.
- Fix the simple, high-value items first.
- Test changes before rolling them out broadly.
- Revisit the score regularly and track trends.
What a good score looks like
There is no universal “perfect” score, because every business is different. Still, many guides treat anything below about 40% as a sign that basic security controls are missing, while scores above 80% usually suggest a much stronger security posture. The real value is not chasing a number for its own sake, but using the score to prioritise the settings that matter most.
Closing thoughts
Microsoft Secure Score is useful because it turns security from a vague concern into a measurable action plan. For small businesses, that makes it easier to tighten Microsoft 365 without overcomplicating the environment. If your tenant has not been reviewed in a while, it is worth checking what Microsoft is already telling you to fix.