CISO Tribune

Vendor comparison · 2 companies

NopSec vs Nucleus Security

NopSec sells a Cyber Threat Exposure Management (CTEM) platform and penetration testing services. Nucleus Security sells vulnerability and exposure management software for enterprise organizations and government agencies. CISO Tribune files both under Exposure prioritisation and CTEM and Vulnerability management. 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.

  • NopSec
  • Nucleus Security
NopSec vs Nucleus Security: Products, Customers and Funding Compared
NopSecNopSec sells a Cyber Threat Exposure Management (CTEM) platform and penetration testing services.nopsec.comNucleus SecurityNucleus Security sells vulnerability and exposure management software for enterprise organizations and government agencies.nucleussec.com
What it sells
  • CTEM Platform[1][2]A platform that aggregates vulnerability prioritization, remediation automation and performance reporting into one centralized platform.
  • Penetration Testing[1][3]NopSec in-house security experts simulate attack scenarios on a customer environment.
  • 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.
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: Not stated on its pages
  • Gartner Peer Insights: Not stated on its pages
  • G2: listed, seen November 10, 2026[12]
  • Gartner Peer Insights: Not stated on its pages
Who it fits
Not written yetNot written yet
Last verified
November 13, 2026November 8, 2026

Where they overlap

  • NopSec and Nucleus Security are both filed under Exposure prioritisation and CTEM and Vulnerability management.

Where they differ, field by field

  • NopSec's primary category is Exposure prioritisation and CTEM; Nucleus Security's is Vulnerability management.
  • NopSec is also filed under Penetration testing and red team services. Nucleus Security is also filed under Threat intelligence.
  • NopSec lists CTEM Platform and Penetration Testing. Nucleus Security lists Nucleus Data Core and Nucleus ServiceNow App connector.

What it sells: NopSec

What CTEM Platform does[1][2]
NopSec's CTEM platform brings SecOps and ITOps teams together to reduce exposure across the organization. It integrates with infrastructure scanners, cloud asset scanners, application scanners (SAST and DAST) and CMDBs. NopSec attack path mapping lets Security teams visually validate the effectiveness of their controls on their network.
What Penetration Testing does[1][3]
NopSec in-house security experts simulate attack scenarios to help identify critical vulnerabilities before they are weaponized. NopSec services are custom scoped and custom quoted because no two environments are exactly the same.

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 NopSec and Nucleus Security

What do NopSec and Nucleus Security sell?
NopSec sells CTEM Platform and Penetration Testing. Nucleus Security sells Nucleus Data Core and Nucleus ServiceNow App connector.
Are NopSec and Nucleus Security in the same category?
They share Exposure prioritisation and CTEM and Vulnerability management. NopSec's primary category is Exposure prioritisation and CTEM and Nucleus Security's is Vulnerability management.

About NopSec

NopSec sells a Cyber Threat Exposure Management (CTEM) platform and penetration testing services.[1][2][3]

NopSec addresses teams that struggle to understand and remediate the vulnerabilities that matter to their business using a mix of spreadsheets. NopSec serves the RBVM needs of CISOs and Vulnerability Management teams.[2][4]

The NopSec platform aggregates vulnerability prioritization, remediation automation and performance reporting into one centralized platform. NopSec integrates with infrastructure scanners, cloud asset scanners, application scanners (SAST and DAST) and Configuration Management Databases (CMDBs). NopSec UVRM integrates with over 50 threat intelligence and asset data technologies to assess risk, prioritize remediations and report on progress. Bi-directional syncing between NopSec and vulnerability scanners ensures security tools report the same status.[1][2][5][6]

NopSec uses a patented machine-learning algorithm to surface infrastructure, application and cloud/container vulnerabilities most likely to be weaponized. NopSec prioritizes vulnerabilities associated with malware and exploit kits, not just vulnerabilities identified with exploits. The NopSec platform aggregates application and infrastructure vulnerability data. NopSec attack path mapping lets Security teams visually validate the effectiveness of their controls and the effects of their potential remediations on their network.[5][9]

NopSec provides full-stack reporting that puts application vulnerabilities next to infrastructure vulnerabilities. NopSec enables Security teams to benchmark progress, quantify risk remediation and articulate risk by business line.[5]

NopSec has performed manual penetration testing and red-teaming engagements across infrastructure, applications, wireless, mobile, social engineering and VoIP since 2008. NopSec in-house security experts simulate attack scenarios on a customer environment to help identify critical vulnerabilities before they are weaponized. NopSec evaluates exploitable areas of risk in infrastructure, applications and employees. NopSec services are custom scoped and custom quoted because no two environments are exactly the same.[7][8]

NopSec runs either agent-deployed or traditional-schedule scans. NopSec reports on risk posture and progress in the customer's UVRM instance.[9]

NopSec's security research team simulates real-world attacks against AI-powered applications, LLM integrations and agentic infrastructure to find exploitable weaknesses. NopSec tests applications that use retrieval-augmented generation for adversarial content injected into the knowledge base or retrieved documents.[3]

Cisco announced end-of-life for Kenna Security in December 2025. NopSec created a dedicated program specifically for Kenna customers. NopSec's JumpStart Program includes dedicated migration specialists. NopSec is scanner-agnostic and integrates with Tenable, Qualys, Rapid7, CrowdStrike, Defender, AWS Security Hub, Azure Security Center and many other sources.[10]

NopSec was founded by white hat hackers aiming to help companies improve their cybersecurity from attacks. NopSec follows the NIST Cybersecurity Framework with layered security controls to help identify, prevent, detect and respond to security incidents.[1][2][3][9][10][12]

NopSec on the record

Sources

NopSec full record

  1. [1]nopsec.comNopSec · nopsec.com · undated page, accessed November 13, 2026 · Tier A
  2. [2]The Fix Less, Secure More Cyber Threat Exposure Management Platform | NopSecNopSec · undated page, accessed November 13, 2026 · Tier A
  3. [3]Penetration Testing for AI Applications - NopSecNopSec · undated page, accessed November 13, 2026 · Tier A
  4. [4]Why Nopsec: NopSec Helps Leading Companies Reduce Cyber Exposure Risk | NopSecNopSec · undated page, accessed November 13, 2026 · Tier A
  5. [5]Cyber Threat Exposure Management Platform Overview | NopSecNopSec · undated page, accessed November 13, 2026 · Tier A
  6. [6]Partner Integration Ecosystem: GRC & Analytics Integrations • NopSecNopSec · undated page, accessed November 13, 2026 · Tier A
  7. [7]Pen Testing: Penetration Testing and Simulated Cyber Attacks | NopSecNopSec · undated page, accessed November 13, 2026 · Tier A
  8. [8]Security Services • NopSecNopSec · undated page, accessed November 13, 2026 · Tier A
  9. [9]Managed Vulnerabilty Management • NopSecNopSec · undated page, accessed November 13, 2026 · Tier A
  10. [10]JumpStart Program for Kenna Customers - NopSecNopSec · undated page, accessed November 13, 2026 · Tier A
  11. [11]About NopSec • NopSecNopSec · undated page, accessed November 13, 2026 · Tier A
  12. [12]Security - NopSecNopSec · undated page, accessed November 13, 2026 · Tier A

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

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