Microsoft DefenderDefender for Office 365
Advanced protection for email and collaboration against phishing, BEC, and malware.
Microsoft Defender for Office 365 protects email and collaboration — Exchange Online, Teams, SharePoint, and OneDrive — against phishing, business email compromise, ransomware, and advanced malware, with Safe Links, Safe Attachments, anti-phishing, automated investigation, and attack simulation training. Part of Microsoft Defender XDR, it correlates email threats across the estate. Faltrox deploys and operates it as managed email and collaboration security.
Overview
What Defender for Office 365 is
Email and collaboration are the primary attack vectors, and native Microsoft 365 protection alone is often outpaced by targeted phishing, BEC, and weaponised links and files. Defender for Office 365 adds the advanced layer — detonating attachments and links, catching impersonation, and hardening users against the attacks that reach them.
It provides Safe Attachments (sandbox detonation), Safe Links (time-of-click URL protection), advanced anti-phishing with impersonation and spoof intelligence, protection across Teams, SharePoint, and OneDrive, automated investigation and response, and attack simulation training to harden the human layer. As part of Microsoft Defender XDR, email threats correlate with endpoint and identity signals. Faltrox deploys it, tunes the policy, and operates the detection, response, and simulation as managed email and collaboration security.
Coverage
What it protects
The platforms, threats, and surfaces this product is built to defend.
Protects Exchange Online against phishing, BEC, ransomware, and advanced malware.
Teams & Collaboration
Extends protection to Teams, SharePoint, and OneDrive.
Malicious Links
Safe Links provides time-of-click URL protection against phishing and malicious sites.
Weaponised Attachments
Safe Attachments detonate files in a sandbox to catch unknown malware.
Impersonation & BEC
Advanced anti-phishing catches impersonation and business email compromise.
User Resilience
Attack simulation training hardens users against real phishing techniques.
How it works
The mechanism
How the product moves from signal to protected state, step by step.
- 01
Filter
Anti-spam, anti-malware, and anti-phishing filter known and impersonation-based threats.
- 02
Detonate
Safe Attachments detonate files and Safe Links check URLs at time of click for unknown threats.
- 03
Protect Collaboration
Protection extends to Teams, SharePoint, and OneDrive files and links.
- 04
Respond
Automated investigation and response remediate threats, including post-delivery.
- 05
Operate
Faltrox tunes policy, runs simulation training and response, and correlates across Defender XDR.
Capabilities
Key capabilities
Safe Attachments
Detonates email and file attachments in a sandbox to catch unknown malware.
Safe Links
Time-of-click URL protection rewrites and checks links against threats.
Advanced Anti-Phishing
Impersonation and spoof intelligence catch phishing, BEC, and impersonation.
Collaboration Protection
Extends protection to Teams, SharePoint, and OneDrive.
Automated Investigation & Response
Automatically investigates and remediates threats, including post-delivery removal.
Attack Simulation Training
Simulates real phishing attacks and trains users to harden the human layer.
Threat Explorer & Hunting
Rich investigation, threat explorer, and hunting across email threats.
Defender XDR Integration
Email threats correlate with endpoint and identity signals across Defender XDR.
Works with
Part of the platform
Microsoft products this pairs with, and the Faltrox services that operate it.
Delivery
You buy the outcome, not the console
Managed by Faltrox
Faltrox licenses, deploys, and tunes Microsoft Defender for Office 365 for your environment, then runs it as part of a managed service, so you get the protection without staffing another security console.
FAQ
Common questions
01Isn’t Microsoft 365 email protection enough?
Native Exchange Online Protection handles known spam and malware, but targeted phishing, BEC, and weaponised links and files often get past it. Defender for Office 365 adds the advanced layer — sandbox detonation, time-of-click link protection, and impersonation detection — plus protection across Teams, SharePoint, and OneDrive.
02What are Safe Links and Safe Attachments?
Safe Attachments detonate email and file attachments in a sandbox to catch unknown malware before delivery; Safe Links rewrite and check URLs at the time of click, so a link that turns malicious after delivery is still blocked when the user clicks it.
03Does it protect against business email compromise?
Yes — advanced anti-phishing uses impersonation and spoof intelligence to catch BEC and impersonation, which are malware-free and rely on deception, so they need intent-based detection that basic filtering misses.
04Does it help train our users?
Yes — attack simulation training runs realistic phishing simulations and delivers targeted training, hardening the human layer against the attacks that reach the inbox. Faltrox runs that programme.
05How does Faltrox operate it?
We deploy and tune the policy, run attack simulation training and response, and correlate email threats across Defender XDR — delivering managed email and collaboration security integrated with the rest of your Microsoft defence.
Start an engagement
Secure what’s next.
Speak with the engineering team to define scope, walk through the methodology, and decide whether Faltrox is the right team to test and run your environment.
Contact us