Microsoft 365

Microsoft 365 Security & Microsoft Defender

Protect your people, identities, devices, email and data across Microsoft 365.

Microsoft 365 is where your business works: email, files, Teams and, increasingly, AI. That also makes it where attackers focus. Many organizations already pay for powerful Microsoft security tools but have never fully configured them.

TCI Technologies designs, deploys and manages Microsoft 365 security, from multi-factor authentication and conditional access to Microsoft Defender, Intune and data protection, so your Microsoft investment actually protects your business.

Schedule a Microsoft 365 Security Assessment
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Why Microsoft 365 Security Matters

Most attacks on small and midsize businesses now target Microsoft 365 accounts and the people who use them.

Compromised Accounts

Stolen passwords give attackers access to email, files and Teams.

Phishing & Email Fraud

Fake invoices, payment requests and login pages target your staff every day.

Ransomware

Malware that encrypts devices and files, halting your business.

Lost or Unmanaged Devices

Laptops and phones with company data and no controls.

Oversharing

Files shared too broadly, inside and outside the company, and easier to find with AI.

What TCI Secures

A layered approach that protects every part of your Microsoft 365 environment:

People→Identities→Devices→Email→Applications→Data

Identities

Microsoft Entra ID, multi-factor authentication and conditional access, so only the right people, on the right devices, get in.

Devices

Microsoft Intune and Microsoft Defender for endpoints keep laptops and phones managed, encrypted and protected.

Email & Collaboration

Microsoft Defender for Office 365 helps block phishing, malicious links and attachments across email, Teams and SharePoint.

Cloud Applications

Visibility and control over the cloud apps your team uses, including unapproved ones.

Data

Sensitivity labels, SharePoint permissions and backup keep business information protected and recoverable.

Monitoring & Response

Security alerts reviewed and acted on, so threats are handled before they become incidents.

Microsoft 365 Business Premium & Microsoft Defender

Microsoft offers strong security for small and midsize organizations through Microsoft 365 Business Premium, plus an expanded Defender Suite for organizations that need more.

The Foundation

Microsoft 365 Business Premium

Microsoft’s security-focused plan for small and midsize organizations combines productivity apps with built-in protection, including:

  • ✓Microsoft Defender for Business (device protection)
  • ✓Microsoft Defender for Office 365 (email and collaboration protection)
  • ✓Microsoft Intune (device management)
  • ✓Microsoft Entra ID P1 (identity and conditional access)
  • ✓Microsoft Purview information protection

Advanced Protection

Microsoft Defender Suite for Business Premium

An optional add-on for Business Premium organizations (up to 300 users) that need more advanced protection across:

  • ✓Endpoints
  • ✓Identities
  • ✓Email and collaboration
  • ✓Cloud applications

Not sure which Microsoft security licenses you need?

TCI reviews your environment and recommends the Microsoft 365 licensing and security architecture that fits your organization, so you’re not paying for more than you need, or missing protection you should have. Microsoft’s plans and pricing change regularly, and we’ll walk you through the current options.

How TCI Secures Microsoft 365

1

Assess

We review your Microsoft 365 configuration, licensing, identities, devices, email security and data access.

2

Design

We build a security architecture around your users, risks and compliance needs.

3

Deploy

We configure MFA, conditional access, Defender, Intune and data protection with minimal disruption.

4

Monitor & Manage

We watch for threats, respond to alerts and keep policies current.

5

Review

As Microsoft adds features and your business changes, we adjust your protection.

Related Microsoft Security Services

Microsoft 365 security works best as one connected strategy. Explore each part:

Microsoft Entra ID

Identity security with MFA, conditional access and protected admin accounts.

Learn more →

Microsoft Intune

Manage and secure every laptop, phone and Cloud PC.

Learn more →

Microsoft 365 Backup

Independent backup and recovery for Exchange, SharePoint, OneDrive and Teams.

Learn more →

SharePoint Security

Organized sites and permissions that control who sees what.

Learn more →

Copilot & AI Security

Prepare permissions and data before rolling out Copilot. Plus AI governance.

Learn more →

Security Assessment

Get your free Security Readiness Score in minutes.

Learn more →

Microsoft Security Without the Complexity

You don’t need to become a Microsoft security expert. That’s our job. TCI designs, implements and manages Microsoft 365 security that protects your people, identities, devices, email, applications and data.

Reduce Risk. Simplify Security. Protect Your Business.

Is Your Microsoft 365 Environment Secure?

Find out where you stand. TCI will review your Microsoft 365 security settings and licensing and show you what to address first.

Schedule a Microsoft 365 Security Assessment

Or get your free Security Readiness Score · Call (516) 484-5151

Microsoft, Microsoft 365, Microsoft Defender, Microsoft Intune and Microsoft Entra are trademarks of the Microsoft group of companies. Product features and licensing are subject to change by Microsoft.