The Microsoft 365 Security Illusion

A small child looking at a rock on one side o the photo with a teal triangle on the other side of the photo with the words "The expertise gap"

M365 is less secure than many business owners believe. This is true especially as Microsoft prioritizes usability over security out of the box. Luckily there are advanced features and setups which can keep your business safe that the M365 experts at Intero can use.

Why Having M365 Doesn't Mean You're Protected

"We have Microsoft 365, so we're secure." If we had a dollar for every time we heard this, we'd be writing this blog from a beach somewhere tropical. Unfortunately, this common misconception is putting businesses at serious risk.

The Configuration Challenge


Microsoft 365 is an incredibly powerful platform with robust security features. The keyword here is "features"—as in, they need to be properly configured and activated. Out of the box, M365 prioritizes usability over security, which means most of the advanced protection features are disabled by default.
Here's what most businesses don't realize:


  • M365 has over 1,000 security-related settings

  • The average business uses less than 20% of available security features

  • Default configurations prioritize ease of use over protection

  • Many critical security features require additional licensing

Common Security Gaps We See


In our security assessments, we consistently find these issues:
Multi-Factor Authentication Gaps

  • MFA enabled for admins but not all users

  • Legacy authentication still permitted

  • Emergency access accounts not properly secured

Data Sharing Vulnerabilities

  • External sharing enabled without restrictions

  • Guest access not properly governed

  • Sensitive data shared via unsecured links

Inadequate Monitoring

  • No alerts for suspicious login attempts

  • Data exfiltration going undetected

  • No monitoring of privileged account activities

Conditional Access Oversights

  • Policies not covering all scenarios

  • Location-based restrictions not implemented

  • Device compliance not enforced

The Expertise Investment

Properly securing Microsoft 365 isn't a set-it-and-forget-it task. It requires ongoing attention from someone who understands:

  • How different M365 services interact from a security perspective

  • The latest threat vectors targeting cloud environments

  • How to balance security with productivity

  • Compliance requirements specific to your industry

Don't Learn Security Lessons the Hard Way

Every month, we see headlines about businesses that thought they were protected because they had Microsoft 365. Don't become another statistic. Your M365 investment is only as strong as the expertise managing it.

Want to know how secure your M365 environment really is? Schedule a complimentary security assessment with our team.




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The MSP Microsoft 365 Markup Scandal

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When Your IT Hero Becomes Your Security Risk