Domain assets - Domain assets show all root domains and subdomains that Cortex XSIAM has attributed to your organization and notes whether each domain has a recent resolution. - Administrator Guide - Cortex XSIAM - Cortex - Security Operations

Cortex XSIAM 3.x Documentation

Product
Cortex XSIAM
Creation date
2025-07-15
Last date published
2026-06-04
Category
Administrator Guide
Abstract

Domain assets show all root domains and subdomains that Cortex XSIAM has attributed to your organization and notes whether each domain has a recent resolution.

The External Surface inventory includes all domains that Cortex XSIAM has attributed to your organization and whether each domain has a recent resolution. Root domains and subdomains are displayed as separate entries in the inventory. However, if an organization owns a wildcard DNS entry, all subdomains of that wildcard that resolve to the same IP address are grouped under that one wildcard domain asset entry. If there are more than 1,000 subdomains, subdomains are collapsed under the parent domain.

Cortex XSIAM collects domains and DNS data from a combination of active and passive global collection techniques. For DNS scanning, Cortex XSIAM sends a BIND version query as the payload. This approach still identifies DNS servers that are not BIND compliant as their response informs us of a DNS server’s existence.

Click a row in the Domains table to open the details page for that domain. The information on this page is organized into the following tabs:

  • Overview: Summarizes key information about the domain, including Highlights like internet exposure, Properties like Asset ID, Provider, Asset Category, Account ID, and Tags, along with Attribution Evidence explaining why the asset belongs to your organization

  • Vulnerabilities: Displays Vulnerability Findings and Packages associated with the domain, including CVE IDs, CVSS scores, and EPSS scores

  • Compliance: Displays the Overall Compliance Score and Controls by Status for the domain

  • Recently Observed: Lists recently observed IPs associated with the domain, including the IP Address, Last Seen date, and Cloud Type

  • Services & Websites: Lists the services and websites running on the domain, including their Type, Status, Discovery Type, and Host