Microsoft Defender External Attack Surface Management

See your business the way an attacker can.

A person working at their desk looking at data in Microsoft Excel on a desktop monitor.

Continuous visibility beyond the firewall

See your rapidly changing, global external attack surface in real time.

Discover unmanaged resources

Understand the full extent of your attack surface, including shadow IT and assets created through common, everyday business growth.

Multicloud visibility

Maintain a dynamic inventory of external resources across multiple cloud and hybrid environments.

Identify exposed weaknesses

Prioritize vulnerabilities and misconfigurations hidden in unmanaged resources, then bring the resources under management to remove those exposures.

The external attack surface management challenge

In this era of hybrid work, shadow IT creates an increasingly serious security risk. Microsoft Defender External Attack Surface Management helps cloud security teams see unknown and unmanaged resources outside the firewall.

Capabilities

Discover, classify, and prioritize exposed weaknesses in the cloud, SaaS, and IaaS resources to strengthen security posture.

A Microsoft Defender IASM inventory report in Azure including a list of approved assets.

Real-time inventory

Use dynamic, always-on inventory monitoring to find, analyze, and categorize external-facing resources as they appear.

An attack surface summary dashboard broken out into three priority levels.

Attack surface visibility

Discover external assets across multiple cloud environments, including unknown resources like shadow IT.

A security posture dashboard detailing open ports, SSL configuration and SSL organization.

Exposure detection and prioritization

Uncover vulnerabilities throughout every layer of your external attack surface, including frameworks, web pages, components, and code.

An OWASP Top 10 dashboard explaining what broken access control means, how to remediate it and a list of related assets.

More secure management for every resource

Help protect newly discovered resources in the Microsoft Defender for Cloud portal.

A Microsoft Defender IASM inventory report in Azure including a list of approved assets.

Real-time inventory

Use dynamic, always-on inventory monitoring to find, analyze, and categorize external-facing resources as they appear.

An attack surface summary dashboard broken out into three priority levels.

Attack surface visibility

Discover external assets across multiple cloud environments, including unknown resources like shadow IT.

A security posture dashboard detailing open ports, SSL configuration and SSL organization.

Exposure detection and prioritization

Uncover vulnerabilities throughout every layer of your external attack surface, including frameworks, web pages, components, and code.

An OWASP Top 10 dashboard explaining what broken access control means, how to remediate it and a list of related assets.

More secure management for every resource

Help protect newly discovered resources in the Microsoft Defender for Cloud portal.

Uncover your external attack surface

Get complete visibility into internet-exposed assets with code-level discovery through a global network that graphs online relationships.

Integrated threat protection with SIEM and XDR

Microsoft empowers your organization’s defenders by putting the right tools and intelligence in the hands of the right people. Combine security information and event management (SIEM) and extended detection and response (XDR) to increase efficiency and effectiveness while securing your digital estate.

Microsoft 365 Defender
 

Prevent and detect attacks across your Microsoft 365 workloads with built-in XDR capabilities.

The homepage in Microsoft 365 Defender showing active threats, active incidents, users at risk and more.

Microsoft 365 Defender
 

Prevent and detect attacks across your Microsoft 365 workloads with built-in XDR capabilities.

Related products

Use best-in-class Microsoft security products to prevent and detect attacks across your organization.

Documentation and training

Protect everything

Make your future more secure. Explore your security options today.

Organizations are now responsible for defending the internal network and everything beyond, including their digital presence across the internet and the cloud. Microsoft Defender External Attack Surface Management maps an organization’s internet-exposed presence. It provides complete visibility into managed and unmanaged external resources to understand the attack surface and classify and prioritize exposures, vulnerabilities, and misconfigurations.