Services - User Guide - 2 - Cortex XPANSE - Cortex - Security Operations

Cortex Xpanse Expander User Guide

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User Guide

Cortex Xpanse provides a complete inventory of all of the public internet-facing services attributed to your organization.

Cortex Xpanse provides a complete inventory of all of the public internet-facing services attributed to your organization. An external service can be any internet-facing device or software that communicates on a domain:port or IP:port pair.

Services include classifications which are fingerprint-based identifiers of software, technologies, and behaviors observed on the service. Classifications can be either active or inactive based on the most recent observations of a service. In addition to classifications, services will also include banner, response, and header information from Cortex Xpanse data collection.

Navigate to Asset InventoryServices to view the complete list of services discovered by Cortex Xpanse. The fields are described in the table below.



Active Classifications

Facts that have been inferred a service by examining a response for fingerprints. Classifications cover a variety of details including:

  • Identifying specific software and versions

  • Configuration details of note

  • Identifying when the services do not implement best practices like web security headers or certificate security standards

Some Classifications merely note that a fact is true or false, like Missing Cache Control Header. Other Classifications provide additional information, such as a version number for “nginx Server”.

Discovery Type

Services are identified with one of the following two discovery types, depending on the level of confidence Cortex Xpanse has in attributing it to your organization.

  • Directly Discovered—Services that are definitively associated with an asset that belongs to your organization. Examples include:

    • It is hosted on one of your on-prem IP ranges

    • The service advertises one of your organization's certificates

    • It is on a managed cloud resource that is known to be yours

  • Colocated with your Services—Service is running on the same IP as a different directly-discovered service. In a multi-tenant hosting environment, these co-located services may belong to other organizations but can sometimes pose adjacency risks to your services hosted on that IP. If your organization has “single-tenant environment only” policies with 3rd party hosting providers, you can use this functionality to identify possible violations of that policy.


The most recent domain on which the service is running.

Externally Detected Providers

The provider of the asset is determined by an external assessment.

Externally Inferred CVEs

Externally Inferred CVEs are identified by comparing the product name and version of active service, if identifiable, with CVES for those products in the National Vulnerability Database. Additional investigation may be required to confirm if the CVE is present.

Click on the service to view the service details, which include the complete list of all the externally inferred CVEs.

Externally Inferred Vulnerability Score

This score is based on the highest CVSSv3 score for Externally Inferred CVEs on this service. If there is no CVSSv3 score for the CVE, then the CVSSv2 score is used.

First Observed

When the asset was first observed via any of the sources.

Inactive Classifications

Previously observed classifications that are no longer observed. See Active Classifications for a description of classifications.

Is Active

Yes— indicates the service is active, which means that the service has been observed recently. No— indicates the service is inactive, which means Cortex Xpanse no longer sees it on the internet

IPv4 Addresses

Array column listing the IPv4 addresses associated with this asset.

IPv6 Addresses

Array column listing the IPv6 addresses associated with this asset.

Last Observed

When the asset was last observed via any of the sources.


The most recent port for the service.


The application-level protocol on the public internet over which Cortex Xpanse validated the service.

Service ID

Unique ID associated with the service.

Service Name

The service type along with the specific domain:port or IP:port pair for the service.

Service Type

The type of server or software for the service.


The following types of tags can be applied to assets:

  • BU: Business Unit is a designation to classify assets by the organization that owns the asset. The BU tag cannot be changed for individual assets in the Asset Inventory.

  • IR: IP range tag . Can be applied to external IP ranges.

  • AT: Asset Tag. Can be applied to domains, certificates, cloud compute instances, and unassociated responsive IPs.

Services vs. Alerts

Both Services and the Alerts enable you to review items that are attributed to your organization and that are exposed to the public internet.

Alerts identify specific security problems and violations of your organization’s policies and help you track progress on efforts to remediate those problems.

Services provides you with a complete inventory of all services that Cortex Xpansehas observed without security judgments. You can use the Services page to search for items for which there are not currently Attack Surface Rules or to conduct technology usage audits.

Cortex Xpanse can convert any service classifications that are relevant to your organization’s security policies into Attack Surface Rules that will automatically flag new instances that appear on your network as alerts. We are also continuously developing new service classifications to support inventory and security use cases. Contact your Customer Success representative to discuss your needs or ideas.