M365 & AD Hardening
Attackers count on your default settings
Structured hardening of Microsoft 365 and Active Directory that closes common attack paths, protects identities, and raises your security baseline across cloud and on-prem.
Three defined packages. Staged rollout. Measurable results.
Strong environments are configured, not bought
Most Microsoft environments run close to their default configuration, and attackers know it. Weak passwords, legacy protocols, and unprotected identities are still behind the majority of breaches we see. We harden your Microsoft 365 and Active Directory environment against exactly these attack paths, in close cooperation with your technical team and without disrupting daily operations. The result is documented, measurable, and yours to maintain.
Coverage
What we harden
MFA enforced for every user and admin, phishing-resistant authentication, and legacy sign-in methods shut down for good.
Protection against phishing and malware across Exchange, Teams, SharePoint, and OneDrive, with external sharing under control.
Defender baselines, encryption, credential-theft protection, and legacy protocols removed from your internal network.
Audit policies and logging configured so that if something does happen, your team and ours can see it.
How we work
From current state to a measurably stronger baseline
Assess
We map your current configuration against the controls in your chosen package and confirm the scope.
Plan
Changes are prioritised and scheduled with your technical team so nothing surprises the business.
Harden
Controls are rolled out in stages, validated as we go, so daily operations keep running.
Verify
We measure the improvement, document every change, and walk your team through the new controls so the higher security level lasts.
Choose your level
Three packages. One direction: harder to attack
Starter
M365 Starter + AD Essentials
The fast, safe first step, with minimal impact on everyday users. Best for smaller environments or a first structured move on security.
Get in touch- ✓MFA for everyone
- ✓Legacy authentication blocked
- ✓Password protections in place
- ✓Quick wins across the domain
Essentials
M365 Essentials + AD Full L1 Baseline
Broader protection for daily operations. Best for mid-sized organisations that want a standard, trusted baseline.
Get in touch- ✓Everything in Starter, plus:
- ✓Active email defence against phishing and malware
- ✓Risk-based access policies
- ✓Systematic hardening of endpoints and the internal network
- ✓Attackers cannot move freely between systems
Baseline
Full Syndis M365 baseline + AD Full L1 and L2
The highest security level we offer, built on Zero Trust principles. Best for organisations under regulatory oversight or certification requirements.
Get in touch- ✓Everything in Essentials, plus:
- ✓Tightened administrative access
- ✓Remaining legacy and weak cryptography removed
- ✓Identity and endpoint protection for certified, regulated organisations
Purview Information Protection
Data classification and data loss prevention for organisations handling sensitive information, including automated classification of Icelandic personal data.
Who M365 and AD hardening is for
Organisations running on Microsoft 365
Your daily operations live in the cloud. Make sure the doors are locked.
- Identity protection
- Cloud baseline
Hybrid environments
Cloud and on-prem AD side by side create attack paths most teams never see.
- Cloud and on-prem
- Lateral movement blocked
Regulated and certified organisations
Demonstrate a documented, measurable security baseline to auditors and regulators.
- Documented controls
- Measurable results
Why Syndis
Certified. Experienced. Ready
What to know about hardening
No. Changes are rolled out in stages and validated with your technical team before they reach the wider organisation. Most controls in the Starter package are invisible to everyday users.
Raise the baseline before someone tests it
Tell us about your environment. We come back with scope and the package that fits.