Small and midsize businesses now have a powerful new weapon against sophisticated cyber threats, thanks to an increasingly tight partnership between Huntress and Microsoft. Huntress has officially wrapped its managed endpoint detection and response platform around Microsoft Defender, coupling it with a 24/7 security operations center and leveraging its status as a Microsoft-verified SMB solution and active member of the Microsoft Intelligent Security Association.

This isn’t just another integration announcement. It’s a deliberate hardening of defenses for organizations that have long been easy prey for ransomware operators and business email compromise gangs. By combining Microsoft’s native telemetry and threat intelligence with Huntress’s human-led SOC and automated remediation workflows, the two companies are delivering what Huntress calls a “force multiplier” for SMB security—a term that captures both the technical amplification and the operational relief for stretched IT teams.

How the Integration Actually Works

Huntress began life as a managed detection and response provider focused squarely on the underserved SMB market. Its platform initially relied on a lightweight agent that hunted for persistent footholds, ransomware canaries, and other indicators of compromise. Over the past two years, the architecture has expanded to ingest and correlate alerts directly from Microsoft Defender for Endpoint, Microsoft Defender for Business, and the broader Microsoft 365 Defender stack.

When an SMB enrolls in Huntress’s managed EDR service, the platform establishes a secure API connection to the customer’s Microsoft tenant. That connection pulls in raw alerts, device timelines, and advanced hunting data that Microsoft’s sensors generate. A Huntress-curated set of detection rules then filters the noise—SMBs regularly see thousands of low-fidelity alerts per day—and surfaces only the handful of events that demand human attention.

What separates this from a simple SIEM forwarding rule is the context injection. Huntress’s threat operations analysts can pivot directly from a Microsoft Defender alert into the Huntress dashboard and see the exact process tree, network connections, and registry modifications that preceded the detection. They don’t need to remote into a customer’s machine or ask for logs; the investigation starts the moment the alert lands. The platform’s automated remediation engine can then take action—killing processes, quarantining files, or resetting compromised credentials—often before the customer even knows an attack was underway.

The Force Multiplier Effect

The term “force multiplier” appears repeatedly in Huntress’s material, and for good reason. In military doctrine, a force multiplier is anything that increases the combat effectiveness of a given number of troops. In cybersecurity, it’s the same idea: Huntress wraps Microsoft’s already powerful built-in defenses with a layer of human analysis and automated response that makes every SMB’s existing security investment work harder.

Consider a typical SMB. They might have Microsoft 365 Business Premium, which includes Defender for Business, and perhaps the Microsoft 365 Lighthouse portal if they’re managed by an MSP. That gives them strong signal generation—but no one to watch the signal after hours, on holidays, or during a volume spike. Huntress becomes that watcher. Its 24/7 SOC (spread across multiple time zones) triages every high-severity alert within minutes. According to the company’s published benchmarks, the median time to triage is under four minutes, and time to full investigation often falls below 15 minutes.

That speed matters because SMB ransomware dwell times are shrinking. Microsoft’s 2024 Digital Defense Report noted that average dwell times for financially motivated adversaries have dropped below 48 hours, with some intrusions progressing from initial access to encryption in under five hours. An SMB that relies solely on passive alerting from Defender without a managed SOC behind it can easily miss a weekend compromise until Monday morning—by which point backups may already be encrypted.

Huntress acts as an always-on safety net. It’s not just watching for malware. The SOC hunts for business email compromise (BEC) by monitoring for suspicious inbox rules, mailbox forwarding changes, and anomalous logins—signals that Microsoft Defender for Office 365 generates but that often go unnoticed. In one case study shared during the partnership announcement, Huntress identified and halted a BEC attack within 12 minutes of the adversary creating a hidden forwarding rule, preventing what could have been a six-figure wire fraud.

Microsoft-Verified SMB Solution: What That Means

Getting the Microsoft-verified SMB solution badge isn’t a casual endorsement. Microsoft runs its partner solutions through a multi-point validation process: security, compliance, manageability, and alignment with Microsoft 365 product roadmaps. Huntress earned that verification in early 2024 after demonstrating that its platform meets Microsoft’s technical bar for SMB-focused services.

For SMBs and their managed service providers, the verification acts as a shortcut. It signals that Huntress integrates natively—no duct tape, no extra agents that conflict with Defender, no shadow IT. The verification also unlocks co-selling opportunities: Microsoft field sellers can now recommend Huntress to SMB customers as a “verified” managed security add-on, which accelerates the buying cycle.

Crucially, the verification isn’t a one-time event. Huntress must re-certify regularly as Microsoft’s APIs and security protocols evolve. That ongoing commitment assures customers that the integration won’t break after the next Defender for Endpoint update.

Membership in the Microsoft Intelligent Security Association

Separate from the solution verification, Huntress holds membership in the Microsoft Intelligent Security Association (MISA)—an elite ecosystem of independent software vendors and managed security providers that Microsoft has nominated based on product integration and shared threat intelligence. MISA membership gives Huntress early access to new Microsoft security APIs, private threat intelligence sharing channels, and a feedback loop into Microsoft product teams.

In practical terms, that membership translates into faster feature parity. When Microsoft released its new “Live Response for Mac” capability in Defender for Endpoint, Huntress was able to extend its SOC investigation workflows to macOS endpoints within weeks, rather than months. When Microsoft began rolling out its new streamlined onboarding for Defender for Business, Huntress collaborated to ensure its own onboarding playbooks mirrored the experience, so SMBs wouldn’t face conflicting instructions.

Huntress’s SOC teams also participate in joint incident response calls with Microsoft’s Detection and Response Team (DART). In one publicly disclosed example, a multi-tenant ransomware attack targeting 14 SMBs was simultaneously investigated by DART and Huntress, with Huntress performing the tenant isolation steps while DART handled the identity infrastructure remediation. The parallel effort cut total response time by more than half compared to sequential vendor engagement.

The SMB Paradox: Targets Without Defenders

Why do SMBs need this level of partnership? The numbers are stark. According to the FBI’s Internet Crime Complaint Center, cybercrime losses reported by small businesses exceeded $3.5 billion in 2024, with BEC alone accounting for over $2.1 billion. Yet the same businesses consistently under-invest in security operations. Many still rely on the assumption that “Microsoft protects us” without realizing that the alerts are only as good as the human who sees them.

Microsoft itself has acknowledged this gap. The introduction of Defender for Business in 2022 democratized EDR for SMBs, but it didn’t provide the SOC. Huntress fills that void. By offering a fixed-cost subscription per seat—typically far below the salary of a single junior security analyst—Huntress makes 24/7 monitoring financially accessible for companies with 10 to 500 employees.

That economic model works because Huntress centralizes expertise. A team of 70 analysts monitors tens of thousands of endpoints; the cost of building and retaining that team would be prohibitive for any individual SMB. The Microsoft Defender underlay provides the raw material, and Huntress provides the skilled labor.

Real-World Impact on SMB Security Posture

Before closing a recent funding round, Huntress commissioned an independent audit of customer outcomes. The results were eye-opening: SMBs using the Huntress managed EDR service with Microsoft Defender experienced a 94% reduction in successful ransomware events versus unprotected peers. Mean time to containment for detected threats dropped from 18 hours (self-managed) to 22 minutes (Huntress-managed).

One concrete example involves a Midwestern accounting firm with 40 endpoints. Before Huntress, they had Defender for Business enabled but no one actively monitoring alerts. A low-velocity password spray attack went unnoticed for three days, eventually compromising a partner’s account. After onboarding Huntress, an identical password spray was triaged and blocked within six minutes. The automated remediation process disabled the compromised account, reset multi-factor authentication, and rolled out a conditional access policy—all without a phone call.

Another example: a manufacturing company’s plant floor machines running an older Windows build were excluded from Defender’s attack surface reduction rules because legacy software would break. Huntress placed custom detection rules around those exclusions, monitoring for known exploitation patterns. When an adversary attempted to leverage one of those excluded paths during a Maze-lite ransomware attack, Huntress isolated the machine at the network level (via the Microsoft Defender API) before the attack could spread, preserving production downtime.

For MSPs: A Force Multiplier by Proxy

The SMB security story can’t be told without managed service providers. Most SMBs don’t have internal IT staff; they outsource to MSPs who are drowning in alerts and device management. Huntress recognized this early and designed its partnership with Microsoft to be MSP-centric. The Huntress platform integrates with Microsoft Lighthouse, the multi-tenant management portal that allows MSPs to view security incidents across all their clients from a single pane of glass.

When an MSP onboards a customer to Huntress, the SOC acts as a triage layer between the raw Microsoft Defender alerts and the MSP’s help desk. Only escalations that require business decisions or physical access reach the MSP. That turns the MSP from a reactive firefighter into a proactive overseer. Some MSPs report saving 15 to 20 hours per week per technician by allowing Huntress to handle the false-positive sifting and low-level containment tasks.

The economics shift, too. MSPs can package Huntress alongside Microsoft 365 Business Premium as a single “secure office” stack, improving margins while delivering a stronger security posture. The Microsoft-verified badge gives MSPs a trusted talking point: “It’s not some third-party tool we slapped on; it’s the only managed security add-on that Microsoft officially verifies for SMBs.”

Challenges and Tradeoffs

No partnership is without friction. Some MSPs have grumbled about the API throttling limits Microsoft imposes on third-party integrations. During large-scale multi-tenant incidents, Huntress can hit a ceiling on concurrent API calls, delaying alert ingestion by a few seconds. Both companies acknowledge this and have been working on rate-limit exceptions for verified partners, but it remains a limiting factor during “flash crowd” attacks that span multiple tenants simultaneously.

Another concern is the over-reliance on a single vendor stack. Critics argue that pairing Huntress exclusively with Microsoft Defender creates a monoculture risk: if an adversary finds a blind spot in Defender, Huntress’s custom detections might also miss it. Huntress counters that its independent threat hunting team writes detection logic that does not depend on Microsoft’s alerting alone; the platform reads raw telemetry and applies proprietary behavioral models. Still, a diverse telemetry source—such as network logs or cloud access security broker data—would strengthen the posture, and some larger SMBs have asked for that expansion.

Licensing confusion remains a pain point. Huntress sells a managed service; Microsoft sells software licenses. SMBs sometimes believe that purchasing Huntress eliminates the need for Microsoft’s higher-tiered plans. In reality, Huntress requires at least Defender for Business or Defender for Endpoint Plan 1 as a prerequisite, which is included in Microsoft 365 Business Premium or as a standalone. Clearer joint collateral could reduce the number of mis-sold bundles.

What’s Next for the Partnership

Looking ahead, Huntress executives have hinted at tighter integration with Microsoft Sentinel and the broader SIEM/XDR ecosystem. While Huntress’s current play is squarely EDR and 365 identity, expanding into SIEM correlation would allow it to ingest third-party logs—firewalls, VPNs, NAS devices—and correlate them with Microsoft telemetry. That could bring the force-multiplier concept to the mid-enterprise segment, which often already runs a SIEM but lacks 24/7 analysts.

Another likely development is deeper automation in incident response playbooks. Huntress already uses Microsoft Graph API to perform identity defense tasks like revoking sessions and disabling accounts. Future releases may automate entire containment runbooks using Azure Logic Apps, reducing the human touchpoints from three to zero for well-understood attack patterns.

Huntress’s recent expansion into security awareness training—a departure from its core MDR roots—suggests an ambition to wrap more of the SMB security lifecycle. Microsoft’s own phishing simulation tools are somewhat enterprise-focused; Huntress could bring a simplified, MSP-friendly version to the bundle.

The force multiplier metaphor will likely stick. SMBs don’t need a bigger security budget; they need a smarter one. By pairing Microsoft’s security graph with a human-driven SOC that never sleeps, Huntress is proving that the math can work. The partnership isn’t just another integration—it’s a blueprint for how the security industry might finally close the SMB protection gap.