CISO Tribune

Vendor comparison · 2 companies

Cyrenity vs Quorum Cyber

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. Quorum Cyber delivers Microsoft-first, threat-led cyber security services. CISO Tribune files both under MDR and managed SOC and Incident response and forensics. 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
  • Quorum Cyber
Cyrenity vs Quorum Cyber: 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.comQuorum CyberQuorum Cyber delivers Microsoft-first, threat-led cyber security services.quorumcyber.com
What it sells
  • 24/7 Incident Response[1][3]Contains the threat and restores operations in parallel, with counsel and insurer coordination.
  • Clarity Defend[1][3][6]Managed detection and response service providing 24/7 monitoring, detection and response to attacks.
  • Clarity Extend[1][3]Enhanced security coverage extending monitoring to Microsoft Cloud and third-party technologies across an organization's IT ecosystem.
  • Clarity Protect[1][3]Service that detects and stops threats, reduces cyber risk, and strengthens security across Microsoft and AI environments, including a CTEM offering.
  • Clarity Data & AI[1][3]Service that helps organizations understand, protect and govern data, reducing exposure to insider threats and AI-related risks.
  • Clarity OT[3]Managed detection and response service for operational technology environments.
  • Incident Response Services[3]Services including incident response preparedness, retainer agreements, and emergency MDR for breach investigation and containment.
Categories
Headquarters
Not stated on its pagesEdinburgh, United Kingdom[1]
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 pages
  • September 16, 2026Quorum Cyber announced that it has signed a definitive agreement to acquire Ontinue, a managed extended detection and response provider.[12]
G2 and Gartner Peer Insights
  • G2: Not stated on its pages
  • 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
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, 2026October 7, 2026

Where they overlap

  • MDR and managed SOC is the primary category of both Cyrenity and Quorum Cyber; both are also filed under Incident response and forensics.

Where they differ, field by field

  • Cyrenity is also filed under Vulnerability management and Threat intelligence. Quorum Cyber is also filed under Security consulting and advisory and OT and ICS security.
  • Cyrenity lists 24/7 Incident Response. Quorum Cyber lists Clarity Defend, Clarity Extend, Clarity Protect, Clarity Data & AI, Clarity OT and 1 more.
  • Quorum Cyber is headquartered in Edinburgh, United Kingdom.

How they differ

CISO Tribune files both Cyrenity and Quorum Cyber under MDR and managed SOC as the primary category, and both also appear under incident response and forensics. 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. Quorum Cyber sells a Clarity family of services, including Clarity Defend for managed detection and response, Clarity Extend, Clarity Protect, Clarity Data & AI, and Clarity OT for operational technology environments. Quorum Cyber delivers Microsoft-first services and is a Microsoft Solutions Partner for Security, working with Microsoft Sentinel. Cyrenity's monitoring covers endpoints, identity, cloud, and email.

Cyrenity's incident response work includes ransomware and extortion response and coordination with counsel and insurers. Quorum Cyber's incident response offering includes preparedness, retainer agreements, and emergency MDR for breach investigation and containment. CISO Tribune files Quorum Cyber under security consulting and advisory and OT and ICS security. Cyrenity's AI security service covers prompt injection, jailbreaks, and protection of proprietary models. Quorum Cyber's Clarity Data & AI service helps organizations understand, protect and govern data.

Quorum Cyber is headquartered in Edinburgh, United Kingdom, was founded there in 2016, and has over 350 employees across the UK, US, Canada and UAE. Quorum Cyber states that it protects 400+ organisations across four continents. Cyrenity says it serves organizations across every industry and names professional sports organizations, including the MLS clubs Austin FC, LAFC, and San Diego FC. On September 16, 2026, Quorum Cyber announced a definitive agreement to acquire Ontinue, a managed extended detection and response provider.

Questions about Cyrenity and Quorum Cyber

What do Cyrenity and Quorum Cyber sell?
Cyrenity sells 24/7 Incident Response. Quorum Cyber sells Clarity Defend, Clarity Extend, Clarity Protect, Clarity Data & AI, Clarity OT and 1 more.
Are Cyrenity and Quorum Cyber in the same category?
Yes. MDR and managed SOC is the primary category of both on CISO Tribune.
Where are Cyrenity and Quorum Cyber headquartered?
Quorum Cyber is headquartered in Edinburgh, United Kingdom.
Who are Cyrenity and Quorum Cyber 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.
What have Cyrenity and Quorum Cyber announced recently?
September 16, 2026: Quorum Cyber announced that it has signed a definitive agreement to acquire Ontinue, a managed extended detection and response provider.

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

Quorum Cyber full record

  1. [1]quorumcyber.comQuorum Cyber · quorumcyber.com · undated page, accessed October 7, 2026 · Tier A
  2. [2]Difenda will rebrand as quorum cyberQuorum Cyber · quorumcyber.com · undated page, accessed October 7, 2026 · Tier A
  3. [3]Microsoft Cyber Security Services Provider | Quorum CyberQuorum Cyber · undated page, accessed October 31, 2026 · Tier A
  4. [4]About Quorum | Cyber Security CompanyQuorum Cyber · undated page, accessed November 10, 2026 · Tier A
  5. [5]Why I’m Passionate about Protecting British Organisations from Cybercrime - Quorum CyberQuorum Cyber · undated page, accessed November 10, 2026 · Tier A
  6. [6]Managed Security Services | Quorum CyberQuorum Cyber · undated page, accessed November 10, 2026 · Tier A
  7. [7]Cyber Resilience Assessment | Quorum CyberQuorum Cyber · undated page, accessed November 10, 2026 · Tier A
  8. [8]Quorum Cyber Managed XDR integrates with Microsoft Security Technology - Quorum CyberQuorum Cyber · undated page, accessed November 10, 2026 · Tier A
  9. [9]Quorum Cyber is leveraging Copilot for Security at scale - Quorum CyberQuorum Cyber · undated page, accessed November 10, 2026 · Tier A
  10. [10]Customers Informed of Microsoft Data Breach - Quorum CyberQuorum Cyber · undated page, accessed November 10, 2026 · Tier A
  11. [11]Quorum Cyber appoints Chief Information Security OfficerQuorum Cyber · undated page, accessed November 10, 2026 · Tier A
  12. [12]Quorum Cyber Announces Intent to Acquire Ontinue, Building an Unrivaled Microsoft-First Agentic SOC for the Autonomous Threat EraPRNewswire · published September 16, 2026 · Tier A

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