Cyber criminals do not only target big companies. Small and medium businesses are attacked every day, often because they have fewer defences. Microsoft Defender for Business was built to close that gap, giving organisations of up to 300 users the kind of endpoint protection that was once reserved for large enterprises. Here is what it is and what to consider.
What is Microsoft Defender for Business?
Defender for Business is an endpoint security solution that protects laptops, desktops, phones and servers from malware, ransomware and other advanced threats. It is included in Microsoft 365 Business Premium and is also available as a standalone product. It is managed from the Microsoft Defender portal, alongside your other Microsoft security tools.
Key capabilities
- Next-generation antivirus. Protection against malware and ransomware, backed by cloud intelligence.
- Endpoint detection and response. Spots suspicious behaviour that traditional antivirus misses and lets you investigate and respond.
- Attack surface reduction. Rules that block common attack techniques before they run.
- Automated investigation and remediation. Handles many alerts for you, which is valuable if you do not have a security team.
- Vulnerability management. Finds software weaknesses and missing updates, with prioritised recommendations.
- Web content filtering and network protection. Blocks malicious and unwanted websites.
- Multi-platform coverage. Supports Windows, macOS, iOS and Android.
Defender for Business and email security
Most attacks start with an email. Microsoft 365 Business Premium also includes Microsoft Defender for Office 365 Plan 1, which adds protection such as Safe Links, Safe Attachments and anti-phishing. Together with Defender for Business on devices, it covers the two most common entry points.
Why it suits small and medium businesses
- Simple to deploy and manage, with guided setup and sensible default policies.
- Cost-effective, because it is bundled with Microsoft 365 Business Premium.
- Integrated with Intune, Entra ID and Conditional Access for a single security picture.
- Scales as you grow, with a path to higher Microsoft security plans.
Getting the most out of it
Buying a security product is not the same as being secure. Value comes from correct setup and ongoing management. A good rollout follows three stages: stabilise your environment and onboard every device, optimise policies and settings to match your risk, and enhance over time with monitoring, regular reviews and improvements.
- Assess. Review your devices, licences and current protection.
- Onboard. Bring every device into Defender so nothing is a blind spot.
- Configure. Set policies for antivirus, attack surface reduction, firewall and web filtering.
- Monitor. Watch alerts and respond to genuine threats quickly.
- Review. Check exposure, recommendations and security reports regularly.
Common questions
Is Defender for Business enough on its own?
It is a strong foundation, but it works best alongside multi-factor authentication, patching, backups, email protection and staff awareness training.
Can it replace our existing antivirus?
Yes. Most businesses move to Defender and remove their old antivirus to avoid conflicts and double licence costs.
Key takeaways
- Defender for Business is endpoint security for laptops, desktops, phones and servers, built for organisations of up to 300 users.
- It is included in Microsoft 365 Business Premium and is also available as a standalone product.
- Buying a security product is not the same as being secure, so correct configuration and monitoring matter.
Microsoft Defender for Business: frequently asked questions
What is Microsoft Defender for Business?
An endpoint security solution that protects laptops, desktops, phones and servers from malware, ransomware and other advanced threats. It is managed from the Microsoft Defender portal alongside your other Microsoft security tools.
What does Defender for Business include?
Next-generation antivirus, endpoint detection and response, attack surface reduction, automated investigation and remediation, vulnerability management, web content filtering and network protection, with coverage for Windows, macOS, iOS and Android.
Does it protect email as well?
Microsoft 365 Business Premium also includes Microsoft Defender for Office 365 Plan 1, which adds Safe Links, Safe Attachments and anti-phishing. Together with Defender for Business on devices, it covers the two most common entry points.
Related reading: Microsoft Defender consulting.
Total Solutions IT sets up and manages Microsoft Defender for Australian businesses. Call 02 6061 4222 to talk it through.
