Microsoft Defender for Office 365 (Plan 1)
Protects mailboxes, files, online storage and applications against sophisticated attacks in real time, across Teams, SharePoint, OneDrive and the Office apps.
Microsoft Defender for Office 365 (Plan 1) features
- Safe Attachments for zero-day protection
- Safe Links checked at time of click
- Advanced threat reporting and message trace
- Complements Exchange Online Protection
About Microsoft Defender for Office 365 (Plan 1)
Microsoft Defender for Office 365 (Plan 1) helps protect mailboxes, files, online storage, and applications against new, sophisticated attacks in real time. It offers holistic protection in Microsoft Teams, Word, Excel, PowerPoint, Visio, SharePoint Online, and OneDrive for Business. By protecting against unsafe attachments and expanding protection against malicious links, it complements the security features of Exchange Online Protection to provide better zero-day protection. While the content is being scanned, the URLs are rewritten to go through Office 365. If a link is unsafe, the user is warned not to visit the site or informed that the site has been blocked.
Defender & Purview options
| Product | Best for | Highlights | Pricing |
|---|---|---|---|
| Microsoft Defender for Business | Endpoint security built for small and mid-sized businesses: preventative protection, post-breach detection, automated investigation and response. |
| Contact us |
| Microsoft Defender for Business servers | An add-on to Defender for Business that secures your server operating systems with the same protection as your client devices. |
| Contact us |
| Microsoft Defender for Endpoint P1 | Core endpoint protection for enterprises: preventative protection backed by Microsoft threat intelligence and cloud security analytics. |
| Contact us |
| Microsoft Defender for Endpoint P2 | The full endpoint detection and response platform, adding advanced hunting and automated investigation to Plan 1. |
| Contact us |
| Microsoft Defender for Office 365 (Plan 1)This page | Protects mailboxes, files, online storage and applications against sophisticated attacks in real time, across Teams, SharePoint, OneDrive and the Office apps. |
| Contact us |
| Microsoft Defender for Office 365 (Plan 2) | Everything in Plan 1, plus automation, investigation, remediation and education. |
| Contact us |
| Microsoft Defender for Identity | Cloud-based security analytics that protect against known and unknown identity attack vectors, detecting threats early in the kill chain. |
| Contact us |
| Microsoft Defender for Cloud Apps | Extends IT visibility, governance and control to your cloud applications, with analytics to identify and combat cyberthreats across cloud services. |
| Contact us |
| Microsoft Defender Suite for Microsoft 365 Business Premium | Enterprise-grade threat protection as an add-on for Business Premium. |
| Contact us |
| Microsoft Purview Suite for Microsoft 365 Business Premium | Data governance and compliance as an add-on for Business Premium, with an AI-ready compliance framework for Copilot. |
| Contact us |
| Microsoft Defender and Purview Suites for Microsoft 365 Business Premium | Both suites in a single license: the security and compliance tools large enterprises use, sized for Business Premium. |
| Contact us |
Before you buy
How much does Microsoft Defender for Office 365 (Plan 1) cost?
Pricing depends on how many seats or devices you need and the term you choose, so we quote it rather than list it. Volume discounts available. Tell us your numbers and we'll send a quote.
Can you set it up for us?
Yes. We license Microsoft Defender for Office 365 (Plan 1), deploy it, and stay on as your support team afterwards, so there's one place to call when something needs changing.
We already have Microsoft licenses. Can we move them to you?
In most cases, yes. Send us what you have today and when it renews, and we'll tell you what can be transferred and what's better left until renewal.
Don't know what you need? That's our job.
Tell us how your team works and what you're trying to get done. We'll match you to the right plans and trim anything you won't use, so you only pay for what you need. Your wallet will thank you.
Tell us what you needTell us your requirements
Team size, devices, the apps you use today. A few lines is plenty.
We right-size it
We compare plans across vendors and cut the licenses you're paying for but not using.
You only pay for what you need
A clear quote, with volume discounts where they apply.
Need a quote?
Tell us how many seats of Microsoft Defender for Office 365 (Plan 1) you need. We'll come back with pricing, and tell you honestly if a cheaper plan would do the job.