Microsoft Defender External Attack Surface Management vs. Tenable Security Center

Microsoft Defender External Attack Surface Management is particularly well-suited for discovering, inventorying, and continuously monitoring the external attack surface, especially in environments with heavy Microsoft adoption. It is less suitable as a standalone solution for internal scanning, real-time attack detection, automated remediation, or advanced application testing. Microsoft Defender External Attack Surface Management es especialmente adecuado para descubrir, inventariar y monitorear continuamente la superficie de ataque externa, sobre todo en entornos con fuerte adopción de Microsoft. Es menos adecuado como solución única para escaneo interno, detección de ataques en tiempo real, remediación automática o pruebas avanzadas de aplicaciones. Parts of this review were originally written in Spanish and have been translated into English using a third-party translation tool. While we strive for accuracy, some nuances or meanings may not be perfectly captured.

Incentivized

[Tenable.sc (formerly SecurityCenter)] does very well for internal scanning for vulnerabilities, however it needs to be combined with Tenable.io in order to do cloud scanning.

Incentivized

• Lack of visibility of external assets
• Reduction of the risk of external attacks
• Falta de visibilidad de activos externos
• Reducción del riesgo de ataques externos

Incentivized

• Vulnerability management from one place
• Maximum endpoint visibility
• Easy to set up and plan the structure
• Support desk quickly responses
• Well-prepared documentation
• Broad scanning type
• Supports various compliance standards
• User groups allows coordination between teams

• Asset Attribution and Ownership Clarity
• Risk Prioritization and Business Context
• Noise and False Positives

Incentivized

• Centralized vulnerability management with sensors.
• Network health assessment and Incident response.
• For alerting or notification, it should also support the SMS gateway.

Incentivized

We rate Microsoft Defender External Attack Surface Management’s overall usability as 10 out of 10 because it delivers a strong balance between depth of capability and ease of use, particularly within organizations already operating in the Microsoft security ecosystem.

Incentivized

based on product capabilities and usage

On all of the occasions that I have had to reach out to Tenable for assistance, they have been extremely helpful and knowledgeable. Solutions and support are provided quickly, and they work on the issue until it is resolved.

Incentivized

Because Microsoft Defender External Attack Surface Management is part of the broader Microsoft Defender family (including Defender XDR, Entra ID, Azure Security, Sentinel, etc.), it:
Shares identity, endpoint, and threat context across tools
Reduces the need for custom integrations or connectors
Works in a “single pane of glass” experience for SOC analysts
Why it matters:
Organizations already invested in Microsoft security tools gain greater contextual insight and lower operational overhead.

Incentivized

We decided to go with Tenable due to its robust reporting capabilities and competitive pricing vs its competitors. While all tools are very similar in regards to scanning capabilities we prefer Tenable SC's user interface. We also like the option to have both on-prem and cloud with theirs. Tenable io product as well.

Incentivized

• Reduced Business Risk from Unknown External Assets
• Operational Efficiency and Cost Avoidance
• Faster Risk Identification During Change Events

Incentivized

• Create internal/operational efficiencies
• Improve compliance & risk management
• Cost management
• Solid vulnerability scanner
• Ease, of use, and capabilities when it comes to analyzing vulnerabilities is what makes this product stand out

Incentivized