CISO Tribune

Vendor comparison · 2 companies

Cyrenity vs Nucleus Security

Cyrenity sells managed cybersecurity services covering managed detection and response, threat intelligence, vulnerability management, advisory, AI security, and 24/7 incident response, run as one operation. Nucleus Security sells vulnerability and exposure management software for enterprise organizations and government agencies. CISO Tribune files both under Vulnerability management and Threat intelligence. 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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  • Cyrenity
  • Nucleus Security
Cyrenity vs Nucleus Security: Products, Customers and Funding Compared
CyrenityCyrenity sells managed cybersecurity services covering managed detection and response, threat intelligence, vulnerability management, advisory, AI security, and 24/7 incident response, run as one operation.cyrenitycyber.comNucleus SecurityNucleus Security sells vulnerability and exposure management software for enterprise organizations and government agencies.nucleussec.com
What it sells
  • 24/7 Incident Response[1][3]Contains the threat and restores operations in parallel, with counsel and insurer coordination.
  • 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
From its own pages, Cyrenity sells mainly to organizations across every industry, and it names professional sports organizations as a group it serves. For sports organizations, Cyrenity maps programs to league and federation security requirements. Cyrenity offers threat intelligence monitoring to insurers, managed service providers, and advisors who want a whole client list watched. Its advisory service is aimed at organizations that want executive security leadership without a full-time hire.Not written yet
Last verified
November 13, 2026November 8, 2026

Where they overlap

  • Cyrenity and Nucleus Security are both filed under Vulnerability management and Threat intelligence.

Where they differ, field by field

  • Cyrenity's primary category is MDR and managed SOC; Nucleus Security's is Vulnerability management.
  • Cyrenity is also filed under Incident response and forensics. Nucleus Security is also filed under Exposure prioritisation and CTEM.
  • Cyrenity lists 24/7 Incident Response. Nucleus Security lists Nucleus Data Core and Nucleus ServiceNow App connector.

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 Cyrenity and Nucleus Security

What do Cyrenity and Nucleus Security sell?
Cyrenity sells 24/7 Incident Response. Nucleus Security sells Nucleus Data Core and Nucleus ServiceNow App connector.
Are Cyrenity and Nucleus Security in the same category?
They share Vulnerability management and Threat intelligence. Cyrenity's primary category is MDR and managed SOC and Nucleus Security's is Vulnerability management.
Who are Cyrenity and Nucleus Security sold to?
From its own pages, Cyrenity sells mainly to organizations across every industry, and it names professional sports organizations as a group it serves.

About Cyrenity

Cyrenity sells managed cybersecurity services covering managed detection and response, threat intelligence, vulnerability management, advisory, AI security, and 24/7 incident response, run as one operation. Cyrenity protects organizations across every industry and serves professional sports organizations. Cyrenity's sports security work covers three MLS clubs: Austin FC, LAFC, and San Diego FC.[1][2][3][5]

Cyrenity's AI, security, and incident response experts find the AI that people and agents use, set the rules, enforce them while it runs, and prove it to a board and auditors. Cyrenity's AI governance work defends AI from prompt injection and data exposure. Cyrenity's AI Security service hardens the AI features a business builds and buys against prompt injection, jailbreaks, and data exfiltration through model outputs. Cyrenity's AI Security service protects proprietary models against theft, extraction, and unauthorized access across their lifecycle. Cyrenity's AI Security service guards training and fine-tuning pipelines against manipulated inputs. Cyrenity's AI Security service secures the full path from data ingestion to inference. Cyrenity helps organizations set guardrails, acceptable use, access controls, and oversight for AI.[1][3][6]

Cyrenity's managed detection and response team watches a customer's environment around the clock, investigates what matters, and contains active threats before they spread. Cyrenity's monitoring covers endpoints, identity, cloud, and email, and an analyst triages every alert. When a threat is real, Cyrenity isolates the host, cuts the session, and stops lateral movement. Cyrenity's hunters search a customer's environment for the quiet indicators that automated detection misses. Cyrenity deploys, tunes, and runs the detection stack for customers, correlating signals across tools.[7]

Cyrenity's incident response brings senior responders, AI-accelerated investigation, and hands-on recovery into one coordinated response. Cyrenity's emergency incident response covers around-the-clock triage, incident command, forensic investigation, containment, eradication, and executive status reporting. Cyrenity's ransomware and extortion response covers scoping, evidence preservation, backup and restoration planning, data-exposure analysis, and coordination with counsel, insurers, and specialist partners. Cyrenity's business resumption work covers clean recovery planning, identity restoration, backup validation, rebuild support, application sequencing, and return-to-service validation. Cyrenity investigates credential theft, session and token abuse, malicious OAuth grants, cloud persistence, business email compromise, and payment fraud. Cyrenity investigates AI system incidents involving prompt injection, unauthorized agent actions, MCP and tool misuse, RAG and memory poisoning, and model or pipeline compromise. Cyrenity runs investigation and recovery at once, coordinated by one incident command. Cyrenity's compromise assessment gives evidence-based answers when something looks wrong but a breach is not confirmed.[6][8]

Cyrenity runs realistic breach scenarios with a customer's leadership and technical teams. Cyrenity writes role-based incident response playbooks for the scenarios that threaten a customer. Cyrenity builds security policies, escalation paths, and communication protocols.

Cyrenity's threat intelligence analysts watch the hidden online spaces where cybercriminals plan attacks, sell stolen logins, and trade access to company networks. Cyrenity sends alerts to tools such as Slack and Microsoft Teams. Cyrenity's threat intelligence confirms whether company data, employee details, or a brand have shown up on the dark web. Cyrenity's penetration testing attacks an environment the way attackers would. Cyrenity's cloud assessments cover AWS, Azure, and Microsoft 365. Cyrenity ranks every vulnerability finding by exploitability and business impact. Cyrenity re-tests each fix and documents it for auditors.[10][11]

Cyrenity's security advisors are former CISOs who build the roadmap and sit at the table with a customer's leadership. Cyrenity maps a customer's program to SOC 2, HIPAA, PCI DSS, NIST, and the standards customers and regulators expect, then builds the evidence.[2]

Cyrenity's engagement maps a customer's attack surface and identifies critical vulnerabilities within 48 hours. Cyrenity follows with continuous monitoring and remediation. Cyrenity's sports offering covers ticketing, fan data, broadcast, venues, and the AI behind performance, with 24/7 response. Cyrenity maps sports organizations' programs to league and federation security requirements.[2][3][5][10][11]

Cyrenity on the record

Sources

Cyrenity full record

  1. [1]cyrenitycyber.comCyrenity · cyrenitycyber.com · undated page, accessed November 13, 2026 · Tier A
  2. [2]Security Advisory | Cyrenity CyberCyrenity · undated page, accessed November 13, 2026 · Tier A
  3. [3]Managed Cybersecurity Services | Cyrenity CyberCyrenity Cyber · undated page, accessed November 14, 2026 · Tier A
  4. [4]About Cyrenity | Managed Cybersecurity Services | Cyrenity CyberCyrenity Cyber · undated page, accessed November 14, 2026 · Tier A
  5. [5]Cybersecurity for Professional Sports Organizations | Cyrenity CyberCyrenity Cyber · undated page, accessed November 14, 2026 · Tier A
  6. [6]AI Security | Cyrenity CyberCyrenity Cyber · undated page, accessed November 14, 2026 · Tier A
  7. [7]Managed Detection & Response | Cyrenity CyberCyrenity Cyber · undated page, accessed November 14, 2026 · Tier A
  8. [8]Incident Response & Business Resumption | Cyrenity CyberCyrenity Cyber · undated page, accessed November 14, 2026 · Tier A
  9. [9]Incident Readiness & Planning | Cyrenity CyberCyrenity Cyber · undated page, accessed November 14, 2026 · Tier A
  10. [10]Threat Intelligence | Cyrenity CyberCyrenity Cyber · undated page, accessed November 14, 2026 · Tier A
  11. [11]Vulnerability Management | Cyrenity CyberCyrenity Cyber · undated page, accessed November 14, 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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