CISO Tribune

Vendor comparison · 2 companies

Nucleus Security vs Safe Security

Nucleus Security sells vulnerability and exposure management software for enterprise organizations and government agencies. Safe Security sells a single platform that unifies cyber risk management, continuous threat exposure management and third-party risk management. 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.

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Up to four companies side by side.

  • Nucleus Security
  • Safe Security
Nucleus Security vs Safe Security: Products, Customers and Funding Compared
Nucleus SecurityNucleus Security sells vulnerability and exposure management software for enterprise organizations and government agencies.nucleussec.comSafe SecuritySafe Security sells a single platform that unifies cyber risk management, continuous threat exposure management and third-party risk management.safe.security
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.
  • SafeX[6][7][8]A workforce of 100+ agents that continuously discovers, reasons and acts across cybersecurity.
  • SAFE One[11]A platform that ingests telemetry from the products deployed in a customer's estate.
Categories
Headquarters
Not stated on its pagesPalo Alto, United States[3]
Founded
Not stated on its pages2012[2]
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: listed, seen October 28, 2026[4]
Who it fits
Not written yetFor manufacturers, Safe Security addresses supplier breach exposure affecting production systems, remote maintenance access and engineering IP. Safe Security names payment, loyalty, marketing and fulfillment partners in retail, and clinical, diagnostic and billing partners in healthcare. Safe Security runs one program across business units and geographies, each with its own secure view.
Last verified
November 8, 2026November 2, 2026

Where they overlap

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

Where they differ, field by field

  • Nucleus Security's primary category is Vulnerability management; Safe Security's is Cyber risk quantification.
  • Nucleus Security is also filed under Threat intelligence. Safe Security is also filed under Third-party risk and security ratings.
  • Nucleus Security lists Nucleus Data Core and Nucleus ServiceNow App connector. Safe Security lists SafeX and SAFE One.
  • Safe Security is headquartered in Palo Alto, United States.
  • Safe Security was founded in 2012.

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.

What it sells: Safe Security

What SafeX does[6][7][8]
SafeX coordinates specialized AI Co-Workers that investigate, prioritize, recommend and execute actions. SafeX builds a knowledge graph with relationships. SafeX continuously reasons across relationships to understand exposure, business impact and organizational context. Admins can disable SafeX, AI summaries, widget explanations and AI-powered uploads for the tenant.
What SAFE One does[11]
SAFE One automatically ingests telemetry from the products deployed in a customer's estate using agentless secure passcodes. Safe Security offers over 100 out-of-the-box integrations to discover and onboard assets and signals.

Questions about Nucleus Security and Safe Security

What do Nucleus Security and Safe Security sell?
Nucleus Security sells Nucleus Data Core and Nucleus ServiceNow App connector. Safe Security sells SafeX and SAFE One.
Are Nucleus Security and Safe Security in the same category?
They share Exposure prioritisation and CTEM. Nucleus Security's primary category is Vulnerability management and Safe Security's is Cyber risk quantification.
Where are Nucleus Security and Safe Security headquartered?
Safe Security is headquartered in Palo Alto, United States.
When were Nucleus Security and Safe Security founded?
Safe Security was founded in 2012.
Who are Nucleus Security and Safe Security sold to?
For manufacturers, Safe Security addresses supplier breach exposure affecting production systems, remote maintenance access and engineering IP.

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

Safe Security full record

  1. [1]safe.securitySafe Security · safe.security · published September 24, 2026 · Tier A
  2. [2]About usSafe Security · safe.security · published June 8, 2026 · Tier A
  3. [3]Bt invests in safe securitySafe Security · safe.security · undated page, accessed September 27, 2026 · Tier A
  4. [4]Safe Security Reviews, Ratings & Features 2026 | Gartner Peer InsightsGartner Peer Insights · undated page, accessed October 28, 2026 · Tier C
  5. [5]About Us - Safe SecuritySafe Security · undated page, accessed November 10, 2026 · Tier A
  6. [6]Vendor Risk Management Software for Program Leaders | SAFESafe Security · undated page, accessed November 10, 2026 · Tier A
  7. [7]Autonomous Cyber Risk Management | SAFESafe Security · undated page, accessed November 10, 2026 · Tier A
  8. [8]Vendor Risk Assessment Automation for Analysts | SAFESafe Security · undated page, accessed November 10, 2026 · Tier A
  9. [9]CISO Cyber Risk Management: Vendor and Exposure | SAFESafe Security · undated page, accessed November 10, 2026 · Tier A
  10. [10]Cyber Risk Officer - Safe SecuritySafe Security · undated page, accessed November 10, 2026 · Tier A
  11. [11]Integrations - Safe SecuritySafe Security · undated page, accessed November 10, 2026 · Tier A
  12. [12]Manufacturing Supplier and Cyber Risk | SAFESafe Security · undated page, accessed November 10, 2026 · Tier A
  13. [13]Financial Services Vendor and Cyber Risk | SAFESafe Security · undated page, accessed November 10, 2026 · Tier A
  14. [14]Retail Vendor and Cyber Risk Management | SAFESafe Security · undated page, accessed November 10, 2026 · Tier A
  15. [15]Healthcare Vendor and Cyber Risk Management | SAFESafe Security · undated page, accessed November 10, 2026 · Tier A
  16. [16]Technology Vendor and Cyber Risk Management | SAFESafe Security · undated page, accessed November 10, 2026 · Tier A

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