Microsoft 365 Security Hardening for SMEs
You may already own powerful Microsoft security tools. We help configure, enforce, monitor and evidence them properly - turning Microsoft 365 Business Premium into a real security baseline.
About microsoft 365 security hardening for smes
Microsoft 365 Business Premium includes a strong set of security capabilities, but many SMEs are not getting the full protection because the tenant has not been hardened. Telappliant reviews your Microsoft 365 environment, closes the obvious gaps, and gives you a clear remediation plan backed by practical reporting.
Having Microsoft 365 is not the same as being secure. Most businesses already pay for Business Premium, but key features are only partly configured or not monitored. Common gaps include MFA not enforced consistently, weak or missing Conditional Access, too many global administrators, devices that are not fully enrolled or compliant, BitLocker that is not evidenced, Defender deployed but not tuned, email policies left at default, open external sharing in SharePoint, OneDrive and Teams, no DLP or sensitivity labels, and a low Secure Score with no remediation plan.
Our Microsoft 365 Security Hardening service turns the features you already pay for into a managed security baseline. We assess the current setup, agree a practical hardening plan, implement the changes, and provide evidence that the controls are working. The same review is often the front door into the wider Cyber Fundamentals portfolio - where customers need higher levels of protection, we extend cover into endpoint EDR, advanced phishing protection, vulnerability management, SASE/ZTNA, MDR/SOC, backup, compliance and incident response.
We work in three stages. Assess: review Microsoft 365 identity, device, endpoint, email, collaboration, data protection and Secure Score settings. Harden: apply agreed controls such as MFA, Conditional Access, admin protection, Defender policies, BitLocker, email security and external sharing restrictions. Manage: ongoing reporting, exception tracking and recommended improvements so the environment does not drift back into risk.
This service is designed for SMEs with 10 to 300 users running Microsoft 365 Business Premium, especially businesses with hybrid or remote workers, customer, financial, legal or HR data, Cyber Essentials or cyber insurance pressure, and no dedicated internal security team. You do not need to know every Microsoft security setting - we show what is working, what is missing, and what needs fixing first.
What's included
The capabilities included as standard with this service.
Identity and access
MFA, Conditional Access, legacy authentication, admin roles, risky sign-ins and account security.
Endpoint protection
Microsoft Defender for Business configuration, device risk, alerting, exclusions and attack surface reduction.
Device management
Intune enrolment, compliance policies, device ownership, Windows security baselines and mobile controls.
Encryption
BitLocker deployment, recovery key storage, encryption status and exception reporting.
Email security
Anti-phishing, Safe Links, Safe Attachments, spoof protection, quarantine and impersonation settings.
Collaboration security
Teams, SharePoint and OneDrive external sharing, guest access and file sharing risks.
Data protection
Baseline DLP, sensitivity labels, information protection readiness and data leakage controls.
Secure Score and reporting
Current posture, quick wins, priority actions, monthly reporting and evidence packs.
Where this fits
Common scenarios where this service delivers measurable value.
Microsoft 365 Security Baseline
For smaller SMEs that need the essentials fixed quickly: MFA review, admin account review, Secure Score review, Defender basics, BitLocker check and email security baseline.
Microsoft 365 Security Hardening
For growing SMEs that need a stronger posture: baseline plus Conditional Access, Intune compliance, Defender tuning, anti-phishing controls, external sharing controls and remediation reporting.
Managed Microsoft Security
For SMEs that want ongoing management and evidence: monthly Secure Score review, device compliance reporting, Defender alert review, access policy review, exception tracking and remediation planning.
Cyber Essentials preparation
Use the hardening review to close the technical controls Cyber Essentials and CE Plus assessors test against.
Cyber insurance renewal
Produce the MFA, admin, backup and endpoint evidence underwriters now ask for at renewal.
Larger-customer due diligence
Answer supplier security questionnaires with real configuration evidence, not promises.
Common questions
Talk to us about microsoft 365 security hardening for smes
A short call, no obligation.
Talk to a UK technology partner who's done this for 20 years
Book a practical, no-pressure consultation. We'll review your current setup, show where AI communications, cloud telephony or managed IT could improve customer experience and reduce admin - and tell you straight if you don't need us.
- UK-based people, real account management
- Honest recommendations - even if it's not us
- Practical AI where it adds value, not hype
Microsoft 365 Security Readiness Quiz
12 questions, two minutes. Get an instant readiness score and the right hardening tier for your tenant. Optionally leave your email for a tailored result and the 50-point checklist.
Built for IT managers, finance directors and operations leads who want a defensible answer to "are we using Microsoft 365 securely?" without an audit.
Microsoft 365 Security Readiness
Is MFA enforced on every Microsoft 365 user, including senior leaders and admins?
The 50-point Microsoft 365 Hardening Checklist
A practical, printable checklist covering identity, endpoint, devices, encryption, email, collaboration, data protection, monitoring and evidence. Use it with your IT team or hand it to us to run through.
- 8 sections, 50 named controls
- RAG status columns for your remediation backlog
- Aligned to Cyber Essentials and cyber insurance asks