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The Email Security Layer Microsoft 365 Doesn't Have

Keep Microsoft 365. Add Wizer Email Security.

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What is Email Security?

Email security is the layer of tools and rules that decides what mail actually reaches an inbox, filtering spam and known malware, checking whether a sender is who it claims to be, and flagging messages designed to trick someone into clicking, paying, or replying. Microsoft 365 and Google Workspace both include a baseline version of this built in. It catches a lot. It's also the layer most companies never think to question, because it's already running in the background.
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The Gap

Defender and Google Workspace are built to stop bulk spam and known malware , not a convincing, individually written email with no bad link at all.

That's the gap Wizer Email Security closes, and the one this check measures.

Learn more about Wizer Email Security.

Suspicious email

Microsoft 365 Filter vs. Wizer Email Security

  • What Microsoft 365 Can't Catch

    • Attackers use a built-in Microsoft 365 feature against itself. "Direct Send" exists so devices like printers and scanners can email inside a tenant without logging in. A campaign identified in May 2025 abused it to send mail that looks like it's from a real internal employee, to more than 70 organizations — bypassing Defender's filters, SPF/DKIM/DMARC checks, and tools that rely on external-sender reputation, because the mail never looks externally routed at all.
    • BEC often carries no payload. Impersonation and payment-redirect emails frequently have no link or attachment to scan. They succeed on context, timing, and tone.
    • AI makes every lure one of a kind. Microsoft's own 2025 Digital Defense Report found AI-generated phishing gets a 54% click-through rate vs. 12% for standard phishing — a 4.5x jump.
    • A filter decision isn't a trained employee. Defender flagging or quarantining a message doesn't turn the attack into practice for the person it targeted.

  • What Wizer Adds

    • Built for Microsoft 365. Connects directly through the Microsoft 365 API with admin-granted access, no MX changes.
    • Phishing and BEC detection. An AI second-opinion layer reviews every inbound message behind Defender.
    • Warnings people actually see. Clear banners on suspicious mail, plus a quarantine admins and users can review and release.
    • Faster response for IT. One-click reporting, a full admin audit log, and an AI agent that helps investigate incidents and write detection rules.
    • Real attacks become org-wide training. When one employee reports a real attack, Wizer rebuilds it as a simulation for everyone else. So the same trick doesn't land twice, plus a short training video on what happened and how to spot it next time.
    • Learn more here

Have Questions or want a demo?

FAQ

It stops known malware and bulk spam well. It's not built to catch a convincing, individually written email with no bad link in it, or mail that looks internally routed because it was sent through a legitimate Microsoft 365 feature an attacker abused.

Microsoft 365's native filter is tuned for volume: known threats, flagged domains, bulk spam. Business email compromise, vendor impersonation, and internally-spoofed mail need a layer that looks at context and behavior, not just sender reputation.

No. It connects through the Microsoft 365 API alongside Defender's existing filter, with no MX changes, it adds a layer, it doesn't take over mail delivery or routing.

Yes. A campaign identified in May 2025 abused "Direct Send," a Microsoft 365 feature built for devices like printers and scanners to email internally without logging in, to spoof real employees at more than 70 organizations, bypassing SPF, DKIM, and DMARC entirely because the mail never looked externally routed.

Wizer's Agentic MDR triages and investigates it, tells the employee whether their report was a real threat, and rebuilds a confirmed attack as a phishing simulation for the rest of the organization, so the same trick doesn't land on someone else.

It blocks phishing attacks before they reach an inbox, then turns the blocked attack into a short, AI-generated training video covering what happened, why it was dangerous, and how to spot it next time.

It blocks phishing attacks before they reach an inbox, then turns the blocked attack into a short, AI-generated training video covering what happened, why it was dangerous, and how to spot it next time.

It assigns each employee a dynamic risk score based on the real phishing attacks they actually receive, recalculated after every attack, and targets simulations and training at the highest-risk people and departments rather than running one generic program for everyone.