CISO Tribune

Vendor comparison · 2 companies

Nucleus Security vs Tamnoon

Nucleus Security sells vulnerability and exposure management software for enterprise organizations and government agencies. Tamnoon sells an engine that investigates findings from existing scanners and runs remediations it has proven safe through the customer's own change process. CISO Tribune files both under Exposure prioritisation and CTEM. This page sets the two records side by side: what each sells, where it is based, who owns and funds it, the customers it names and its recent news, each fact numbered to its source.

Change the companies

Up to four companies side by side.

  • Nucleus Security
  • Tamnoon
Nucleus Security vs Tamnoon: Products, Customers and Funding Compared
Nucleus SecurityNucleus Security sells vulnerability and exposure management software for enterprise organizations and government agencies.nucleussec.comTamnoonTamnoon sells an engine that investigates findings from existing scanners and runs remediations it has proven safe through the customer's own change process.tamnoon.io
What it sells
  • Nucleus Data Core[5]A system of record for assets, exposures, and threats.
  • Nucleus ServiceNow App connector[7]A connector that integrates with ServiceNow through the Nucleus Security for Vulnerability Response app.
  • Tami[4]Tamnoon's AI Cloud Security Agent, which enriches each alert with context.
Categories
Headquarters
Not stated on its pagesNot stated on its pages
Founded
Not stated on its pagesNot stated on its pages
Ownership and funding
Not stated on its pagesNot stated on its pages
Named customers
Not stated on its pagesNot stated on its pages
Recent news
Not stated on its pagesNot stated on its pages
G2 and Gartner Peer Insights
  • G2: listed, seen November 10, 2026[12]
  • Gartner Peer Insights: Not stated on its pages
  • G2: Not stated on its pages
  • Gartner Peer Insights: Not stated on its pages
Who it fits
Not written yetFrom its own pages, the company sells mainly to security teams that already run a cloud scanner, and it offers a page for each scanner it lists. One use case page addresses teams facing more criticals than any team can absorb. This is our reading of the pages, not a recommendation.
Last verified
November 8, 2026September 27, 2026

Where they overlap

  • Nucleus Security and Tamnoon are both filed under Exposure prioritisation and CTEM.

Where they differ, field by field

  • Nucleus Security's primary category is Vulnerability management; Tamnoon's is Exposure prioritisation and CTEM.
  • Nucleus Security is also filed under Threat intelligence. Tamnoon is also filed under Managed security service providers.
  • Nucleus Security lists Nucleus Data Core and Nucleus ServiceNow App connector. Tamnoon lists Tami.

What it sells: Nucleus Security

What Nucleus Data Core does[5]
The Nucleus Data Core is a system of record for assets, exposures, and threats. The Nucleus Data Core transforms fragmented data into unified, live exposure context. Nucleus says every AI decision and action is grounded in the Nucleus Data Core.
What Nucleus ServiceNow App connector does[7]
The Nucleus ServiceNow App connector integrates directly with ServiceNow through the Nucleus Security for Vulnerability Response app. The app runs directly on a customer's ServiceNow environment and enables integration with Vulnerability Response. The app has several different integrations, including assets and vulnerable items.

Questions about Nucleus Security and Tamnoon

What do Nucleus Security and Tamnoon sell?
Nucleus Security sells Nucleus Data Core and Nucleus ServiceNow App connector. Tamnoon sells Tami.
Are Nucleus Security and Tamnoon in the same category?
They share Exposure prioritisation and CTEM. Nucleus Security's primary category is Vulnerability management and Tamnoon's is Exposure prioritisation and CTEM.
Who are Nucleus Security and Tamnoon sold to?
From its own pages, the company sells mainly to security teams that already run a cloud scanner, and it offers a page for each scanner it lists.

About Nucleus Security

Nucleus Security sells vulnerability and exposure management software for enterprise organizations and government agencies. Nucleus unifies exposure data, tracks what is being exploited in the wild, and uses AI to build the program. Nucleus says AI is accelerating how fast new vulnerabilities are found and exploited, and that traditional programs cannot keep pace.[1][3][4]

Nucleus Helix drives specialized AI models and agents that build and maintain the program and close exposure gaps. Nucleus Helix runs on the Nucleus Data Core. The Nucleus Data Core is a system of record for assets, exposures, and threats that transforms fragmented data into unified, live exposure context.[5]

Nucleus ingests, correlates, and normalizes data from all of a customer's tools into one hub for unified risk visibility and reporting. Nucleus centralizes exposure management and unifies data from asset discovery, vulnerability scanners, exposure validation, and threat intelligence. Nucleus lets customers customize risk scoring and prioritize risk with asset context and business impact. Nucleus Insights agentic intelligence feed validates exploit and malware evidence. Nucleus offers application security capabilities with unified visibility, exposure prioritization, and automated ownership assignment. Nucleus addresses dynamic cloud environments, including findings sprawl and ephemeral assets.[1][2][3][4]

Nucleus remediation workflows prioritize, ticket, assign owners, and track SLA performance. Nucleus operationalizes ownership metadata in the Nucleus Dynamic Automation Framework to adapt ownership assignment as the business evolves. Nucleus tracks the status of tickets with bi-directional integration and updates when new data is ingested or a status changes. Nucleus lets customers set time limits and document approvals for risk exceptions. Nucleus lets customers define SLAs and monitor ticket status and resolutions over time.[6]

The Nucleus ServiceNow App connector integrates directly with ServiceNow through the Nucleus Security for Vulnerability Response app. The Nucleus Security for Vulnerability Response app runs directly on a customer's ServiceNow environment and enables integration with Vulnerability Response. The Nucleus Security for Vulnerability Response ServiceNow app has several different integrations, including assets and vulnerable items. The app is intended to be installed and configured by a Nucleus Security for Vulnerability Response specialist alongside a ServiceNow administrator with experience with ServiceNow SecOps Vulnerability Response.[7]

CMMC 2.0 is the Department of War (formerly Department of Defense) framework for protecting Federal Contract Information (FCI) and Controlled Unclassified Information (CUI) across the Defense Industrial Base (DIB). Nucleus operationalizes and centralizes evidence, monitors weaknesses, prioritizes risk-based fixes, and proves outcomes across teams and systems for core security controls. Nucleus automatically turns critical findings into tracked incidents with owners, actions, and documented resolution. Nucleus maps findings to NIST 800-171 controls and generates and manages POA&Ms. Nucleus offers POAM automation for the POAM process from vulnerability identification to reporting, for federal agencies and contractors.[8][9]

Nucleus offers two license tiers for unified vulnerability management. Nucleus pricing is affected by the number and type of assets in a customer's environment. Nucleus defines an asset as anything that can have a finding, including physical devices, cloud services, code repositories, and applications. TRUESEC, a European MSSP, unified customer data, automated remediation workflows, and scaled its services in partnership with Nucleus. Nucleus experts researched every new KEV addition between October 2025 and March 2026 and captured their observations in a report. Nucleus Security has published new CVE research in a company white paper.[1][2][4][5][6][10][11]

Nucleus Security on the record

Sources

Nucleus Security full record

  1. [1]nucleussec.comNucleus Security · nucleussec.com · undated page, accessed November 8, 2026 · Tier A
  2. [2]PlatformNucleus Security · nucleussec.com · undated page, accessed November 8, 2026 · Tier A
  3. [3]Nucleus Vulnerability & Exposure Management SolutionsNucleus Security · undated page, accessed November 10, 2026 · Tier A
  4. [4]Nucleus Security | Vulnerability and Exposure ManagementNucleus Security · undated page, accessed November 10, 2026 · Tier A
  5. [5]Nucleus Vulnerability Management PlatformNucleus Security · undated page, accessed November 10, 2026 · Tier A
  6. [6]Vulnerability Remediation with NucleusNucleus Security · undated page, accessed November 10, 2026 · Tier A
  7. [7]ServiceNow App for Vulnerability ResponseNucleus Security · undated page, accessed November 10, 2026 · Tier A
  8. [8]Operationalize CMMC 2.0 Compliance with NucleusNucleus Security · undated page, accessed November 10, 2026 · Tier A
  9. [9]Get Started Nucleus POAMNucleus Security · undated page, accessed November 10, 2026 · Tier A
  10. [10]Nucleus PricingNucleus Security · undated page, accessed November 10, 2026 · Tier A
  11. [11]Risk-based Vulnerability Management | Nucleus SecurityNucleus Security · undated page, accessed November 10, 2026 · Tier A
  12. [12]Nucleus Reviews 2026: Details, Pricing, & FeaturesG2 · undated page, accessed November 10, 2026 · Tier C

Tamnoon full record

  1. [1]tamnoon.ioTamnoon · tamnoon.io · undated page, accessed September 27, 2026 · Tier A
  2. [2]Tamnoon integrates with crowdstrike falcon cloud security to extend cloud risk remediation workflows 302884275Tamnoon via PR Newswire · prnewswire.com · published September 22, 2026 · Tier A
  3. [3]Tamnoon | The Self-Healing Engine for Cloud ExposuresTamnoon · undated page, accessed October 29, 2026 · Tier A
  4. [4]How it heals | TamnoonTamnoon · undated page, accessed October 29, 2026 · Tier A
  5. [5]Integrations | TamnoonTamnoon · undated page, accessed October 29, 2026 · Tier A
  6. [6]After a fix broke production | TamnoonTamnoon · undated page, accessed November 10, 2026 · Tier A
  7. [7]How Zinnia Resolves 65% of High-Severity Misconfigurations | TamnoonTamnoon · undated page, accessed November 10, 2026 · Tier A
  8. [8]Media Conglomerate Migrates from Check Point to Wiz | TamnoonTamnoon · undated page, accessed November 10, 2026 · Tier A
  9. [9]About: the healing gap | TamnoonTamnoon · undated page, accessed November 10, 2026 · Tier A
  10. [10]The Security Leader’s Guide to Securing Cloud EnvironmentsTamnoon · undated page, accessed November 10, 2026 · Tier A

Spot a factual error? Request a correction.