DefenceNet vs. Microsoft Defender
Why relying on default cloud security isn't enough to stop modern phishing.
Disclaimer: Organizations should evaluate solutions based on their specific security requirements. The following comparison is based on publicly available capabilities and architectural differences.
Microsoft Defender for Office 365 (Plan 1 & 2) provides excellent foundational security. As a native component of the Microsoft ecosystem, it handles massive volumes of known spam, bulk mail, and commodity malware effectively. It is a critical layer for organizations utilizing Exchange Online.
However, because Microsoft is the largest email provider globally, it is also the primary target for attackers. Cybercriminals specifically design and test their phishing campaigns to bypass Defender's filters before launching them. DefenceNet acts as the critical secondary layer. By integrating seamlessly via API *behind* Defender, DefenceNet catches the highly targeted BEC, zero-day links, and Quishing attacks that successfully evade Microsoft's perimeter defenses.
| Capability Area | DefenceNet | Microsoft Defender |
|---|---|---|
| Primary Function | Advanced Threat Intelligence & BEC | Broad Spam & Malware Filtering |
| Attack Surface Focus | Zero-Day & Social Engineering | Known Threats & Signatures |
| Computer Vision (Quishing) | Deep native scanning | Basic image OCR |
| URL Sandboxing Timing | Real-Time Milliseconds (Pre-Click) | Safe Links (Time of click delay) |
| Contextual Warning Banners | Dynamic & AI-Generated | Static / Rule-Based |
| Vendor Ecosystem | Independent specialized AI | Microsoft monoculture risk |
Frequently Asked Questions
Do I need to turn off Microsoft Defender to use DefenceNet?
No. In fact, we recommend keeping Microsoft Defender active. Defender acts as a robust filter for commodity spam and known malware, while DefenceNet focuses computational power on analyzing the complex, zero-day, and socially engineered threats that slip through.
Why do attacks bypass Microsoft Defender?
Attackers have access to Office 365 test environments. They iterate their phishing kits, payloads, and BEC scripts until they successfully bypass Microsoft's default security before launching the attack against your organization. DefenceNet provides an independent, specialized AI layer that attackers cannot pre-test against.
How does DefenceNet improve upon Microsoft Safe Links?
Microsoft Safe Links rewrites URLs and checks them at the time of click. However, this introduces latency and relies heavily on known blocklists. DefenceNet's Before-You-Click architecture sandboxes and analyzes the URL entropy upon delivery, neutralizing the threat before the user even sees the email.
Is DefenceNet easy to deploy with Office 365?
Yes. DefenceNet connects directly to the Microsoft Graph API in minutes. There are no MX records to change, no complex routing rules, and no disruption to mail flow.
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