CISO Tribune

Vendor comparison · 2 companies

Atos vs Stellar Cyber

Atos delivers end-to-end technology services across the U.S Atos brings together global expertise and local presence. Stellar Cyber sells a SecOps platform that uses AI for threat detection and response through unified NG-SIEM, NDR, and Open XDR capabilities. CISO Tribune files both under MDR and managed SOC. 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
  • Stellar Cyber
Atos vs Stellar 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.netStellar CyberStellar Cyber sells a SecOps platform that uses AI for threat detection and response through unified NG-SIEM, NDR, and Open XDR capabilities.stellarcyber.ai
What it sells
  • Digital Workplace[3]Collaboration tools, accessible digital experiences and smart care centers.
  • Stellar Cyber Open XDR PlatformA SecOps platform that unifies SIEM, network detection and response, identity threat detection and response, and behavior analytics with AI-driven detection, investigation and response.
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 pagesPrivately held[3][4]
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]
  • October 5, 2026Stellar Cyber announced version 7.0 of its security operations platform, adding AI case triage, case metrics and expanded automated response.[16]
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.Stellar Cyber describes its open SecOps platform as built for lean security teams and MSSPs. Stellar Cyber designs its enterprise platform for security teams of any size or skill level. Stellar Cyber Open XDR can be deployed on-premises, from the cloud, or co-managed by an MSSP.
Last verified
October 14, 2026November 9, 2026

Where they overlap

  • Atos and Stellar Cyber are both filed under MDR and managed SOC.

Where they differ, field by field

  • Atos's primary category is Security consulting and advisory; Stellar Cyber's is SIEM.
  • Atos is also filed under OT and ICS security and Workforce IAM and SSO. Stellar Cyber is also filed under AI SOC analysts.
  • Atos lists Digital Workplace. Stellar Cyber lists Stellar Cyber Open XDR Platform.
  • Stellar Cyber is privately held.

Questions about Atos and Stellar Cyber

What do Atos and Stellar Cyber sell?
Atos sells Digital Workplace. Stellar Cyber sells Stellar Cyber Open XDR Platform.
Are Atos and Stellar Cyber in the same category?
They share MDR and managed SOC. Atos's primary category is Security consulting and advisory and Stellar Cyber's is SIEM.
Who owns Atos and Stellar Cyber?
Stellar Cyber is privately held.
Who are Atos and Stellar Cyber sold to?
It names U.S banks, insurers and fintechs as financial institutions it helps with digital transformation. Stellar Cyber describes its open SecOps platform as built for lean security teams and MSSPs.
What have Atos and Stellar 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. October 5, 2026: Stellar Cyber announced version 7.0 of its security operations platform, adding AI case triage, case metrics and expanded automated response.

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

Stellar Cyber full record

  1. [1]ProductStellar Cyber · stellarcyber.ai · published February 25, 2026 · Tier A
  2. [2]Stellar cyber announces agentic ai autonomous soc in 6 4 0 releaseStellar Cyber · stellarcyber.ai · published March 16, 2026 · Tier A
  3. [3]Stellar cyber named one of americas best startup employersStellar Cyber · stellarcyber.ai · published November 21, 2024 · Tier A
  4. [4]ISOC Platform with AI SIEM, NDR, Open XDR & Multi-Layer AIStellar Cyber · undated page, accessed October 29, 2026 · Tier A
  5. [5]Stellar Cyber Automation-driven SecOps PlatformStellar Cyber · undated page, accessed November 10, 2026 · Tier A
  6. [6]Stellar Cyber vs Sumo Logic: Expert SIEM Solution ComparisonStellar Cyber · undated page, accessed November 10, 2026 · Tier A
  7. [7]Stellar Cyber vs Splunk: In-Depth SIEM Solution ComparisonStellar Cyber · undated page, accessed November 10, 2026 · Tier A
  8. [8]Integrated Security Operations Center (ISOC) PlatformStellar Cyber · undated page, accessed November 10, 2026 · Tier A
  9. [9]SC vs Microsoft Sentinel: Comprehensive SIEM SolutionStellar Cyber · undated page, accessed November 10, 2026 · Tier A
  10. [10]SC vs. CrowdStrike | Compare Leading Cybersecurity PlatformsStellar Cyber · undated page, accessed November 10, 2026 · Tier A
  11. [11]EDR Software, Endpoint Detection & ResponseStellar Cyber · undated page, accessed November 10, 2026 · Tier A
  12. [12]Stellar Cyber Autonomous SOC PlatformStellar Cyber · undated page, accessed November 10, 2026 · Tier A
  13. [13]Stellar Cyber Multi-Layer AI™ | Advanced AI Platform for SecOpsStellar Cyber · undated page, accessed November 10, 2026 · Tier A
  14. [14]Stellar Cyber AI SIEM | AI-Driven SIEM PlatformStellar Cyber · undated page, accessed November 10, 2026 · Tier A
  15. [15]Stellar Cyber vs AlienVault: In-Depth SIEM Solution ComparisonStellar Cyber · undated page, accessed November 10, 2026 · Tier A
  16. [16]Stellar Cyber 7.0 Makes the Agentic SOC Measurable, Actionable and Operational at ScaleStellar Cyber · published October 5, 2026 · Tier A

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