CISO Tribune

Vendor comparison · 2 companies

Atos vs Quorum Cyber

Atos delivers end-to-end technology services across the U.S Atos brings together global expertise and local presence. Quorum Cyber delivers Microsoft-first, threat-led cyber security services. CISO Tribune files both under Security consulting and advisory, MDR and managed SOC and OT and ICS security. 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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  • Atos
  • Quorum Cyber
Atos vs Quorum Cyber: Products, Customers and Funding Compared
AtosAtos delivers end-to-end technology services across the U.S Atos brings together global expertise and local presence.atos.netQuorum CyberQuorum Cyber delivers Microsoft-first, threat-led cyber security services.quorumcyber.com
What it sells
  • Digital Workplace[3]Collaboration tools, accessible digital experiences and smart care centers.
  • 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
  • October 14, 2026Atos is expanding its partnership with Fortinet from a country-led model to a global engagement model covering reselling and managed cybersecurity services.[5]
  • April 28, 2026Atos Group announced the global launch of an integrated Digital Sovereignty offering for organizations seeking control over their data, infrastructure, applications and digital operations.[6]
  • 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: listed, seen November 4, 2026[4]
  • 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
It names U.S banks, insurers and fintechs as financial institutions it helps with digital transformation. Atos describes sovereign cloud environments built around security, governance and jurisdictional requirements, spanning private, hybrid and multi-cloud deployments. Its digital workplace services are aimed at a client's workforce.Not written yet
Last verified
October 14, 2026October 7, 2026

Where they overlap

  • Atos and Quorum Cyber are both filed under Security consulting and advisory, MDR and managed SOC and OT and ICS security.

Where they differ, field by field

  • Atos's primary category is Security consulting and advisory; Quorum Cyber's is MDR and managed SOC.
  • Atos is also filed under Workforce IAM and SSO. Quorum Cyber is also filed under Incident response and forensics.
  • Atos lists Digital Workplace. 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.

Questions about Atos and Quorum Cyber

What do Atos and Quorum Cyber sell?
Atos sells Digital Workplace. Quorum Cyber sells Clarity Defend, Clarity Extend, Clarity Protect, Clarity Data & AI, Clarity OT and 1 more.
Are Atos and Quorum Cyber in the same category?
They share Security consulting and advisory, MDR and managed SOC and OT and ICS security. Atos's primary category is Security consulting and advisory and Quorum Cyber's is MDR and managed SOC.
Where are Atos and Quorum Cyber headquartered?
Quorum Cyber is headquartered in Edinburgh, United Kingdom.
Who are Atos and Quorum Cyber sold to?
It names U.S banks, insurers and fintechs as financial institutions it helps with digital transformation.
What have Atos and Quorum Cyber announced recently?
October 14, 2026: Atos is expanding its partnership with Fortinet from a country-led model to a global engagement model covering reselling and managed cybersecurity services. September 16, 2026: Quorum Cyber announced that it has signed a definitive agreement to acquire Ontinue, a managed extended detection and response provider.

About Atos

Atos delivers end-to-end technology services across the U.S Atos brings together global expertise and local presence.

Atos says it is committed to creating a sustainable, greener digital future. Atos says it provides accessible solutions for the workforce. Atos says it works on strengthening its clients' digital security.

Atos offers end-to-end security spanning hybrid cloud, identity management, OT environments and 24/7 threat detection. Atos backs that security work with expert advisory and penetration testing.

Atos offers sovereign cloud environments across hybrid and multi-cloud, from mainframe modernization and private edge computing to fully managed infrastructure. Atos describes sovereign cloud environments designed around security, governance and jurisdictional requirements. Atos says its sovereign cloud work protects sensitive workloads while maintaining flexibility across private, hybrid and multi-cloud environments.

Atos provides enterprise AI services and modern data platforms. Atos describes services to design, orchestrate and deploy AI agents that automate workflows end-to-end, from conversational copilots and process automation to governance frameworks. Atos has launched the Atos Genesis Intelligence suite featuring Atos Codex.

Atos provides modern application services, from IoT-connected solutions and intelligent automation to low-code platforms and end-to-end digital assurance. Atos offers intelligent collaboration tools, accessible digital experiences and smart care centers for the workforce. Atos delivered a large-scale, global digital workplace transformation for Orange Business. Atos offers integrated platform services for Dynatrace, Salesforce, SAP and ServiceNow that streamline operations and automate processes.

Atos says it brings deep sector knowledge and tailored digital solutions to the challenges of each industry across the USA. Atos helps U.S banks, insurers and fintechs accelerate digital transformation with secure, compliant solutions. Atos financial services work spans customer onboarding, real-time payment platforms, AI-driven risk management, regulatory compliance (GLBA, FFIEC, PCI DSS) and smart operations. Atos expertise covers core banking modernization, fraud detection, wealth management platforms and open banking ecosystems.[2]

Atos has a U.S office at 4851 Regent Boulevard, Suite 400, Irving, TX 75063.[1]

Atos on the record

Sources

Atos full record

  1. [1]CybersecurityAtos · atos.net · undated page, accessed October 14, 2026 · Tier A
  2. [2]Who we areAtos · atos.net · undated page, accessed October 14, 2026 · Tier A
  3. [3]Atos in the USA | Atos AIAtos · undated page, accessed November 1, 2026 · Tier A
  4. [4]Atos Services Reviews 2026: Details, Pricing, & Features - G2G2 · undated page, accessed November 1, 2026 · Tier C
  5. [5]Atos expands partnership with Fortinet to deliver a global unified cybersecurity framework across hybrid and multi-cloud environmentsAtos · published October 14, 2026 · Tier A
  6. [6]Atos Group Launches an Integrated Digital Sovereignty Offering for Regulated and AI-Driven EnvironmentGlobeNewswire · published April 28, 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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