LICENSEWARE
Tenable Rule

Count Once: native assets deduplicated by attribute hierarchy

Catalog row in Vendor License Rules · Cited

Kind
Counting
Statement
Tenable One Foundation / Advanced Licensing: Tenable uses a "count once" approach so the same asset is not charged twice, matching native scanner and agent data through a ranked Identification Attributes hierarchy. Attributes ranked 8-12 (MAC address, NetBIOS name, FQDN, IPv6, IPv4) are network-scoped, so the same IP seen by scanners in two Tenable networks is two assets. Uncredentialed scans of agent-covered hosts can create duplicates because they cannot read the Tenable UUID; cloned VMs with the same agent UUID can merge. (vendor page undated; as published on 2026-09-27)
Applies when
Assessing duplicate or merged asset counts.
Applies to
Tenable One; Tenable One Vulnerability Management.
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