CISO Tribune

Vendor comparison · 2 companies

Guardsix vs Stellar Cyber

Guardsix is a European security company that sells a sovereign security platform for lean defenders, with products for SIEM, NDR, SOAR, fleet management and access governance. 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 SIEM. 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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  • Guardsix
  • Stellar Cyber
Guardsix vs Stellar Cyber: Products, Customers and Funding Compared
GuardsixGuardsix is a European security company that sells a sovereign security platform for lean defenders, with products for SIEM, NDR, SOAR, fleet management and access governance.guardsix.comStellar 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
  • Guardsix SIEM[4][7][8][9][10]A SIEM for lean teams defending Europe, with sovereign log management and audit-ready evidence.
  • Guardsix NDR[4][9]Network detection that pairs with Guardsix SIEM across IT and OT.
  • Guardsix SOAR[4][10]The automation and response layer of Guardsix SIEM.
  • Guardsix Governance[4][12]Audit-ready access control, built first for healthcare.
  • 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
Copenhagen, Denmark[3][8]Not stated on its pages
Founded
Not stated on its pagesNot stated on its pages
Ownership and funding
Owned by Summa Equity since 2023[3][4][6]Privately held[3][4]
Named customers
Not stated on its pagesNot stated on its pages
Recent news
Not stated on its pages
  • 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: 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, Guardsix sells mainly to lean security teams at European organisations in energy, healthcare, government and public services. It also addresses MSSPs and security service providers that run many customer environments. It names critical national infrastructure operators as a focus, and it describes its NDR for complex, regulated environments with IT/OT infrastructure. Guardsix Governance is aimed first at hospital IT and compliance teams. Guardsix frames its offer around organisations accountable to NIS2, DORA and GDPR, and says it is on-prem by default.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
September 27, 2026November 9, 2026

Where they overlap

  • SIEM is the primary category of both Guardsix and Stellar Cyber.

Where they differ, field by field

  • Guardsix is also filed under SOAR and security automation and Network detection and response. Stellar Cyber is also filed under AI SOC analysts and MDR and managed SOC.
  • Guardsix lists Guardsix SIEM, Guardsix NDR, Guardsix SOAR and Guardsix Governance. Stellar Cyber lists Stellar Cyber Open XDR Platform.
  • Guardsix is headquartered in Copenhagen, Denmark.
  • Guardsix is owned by Summa Equity, since 2023. Stellar Cyber is privately held.

How they differ

CISO Tribune files Guardsix under SIEM, SOAR and security automation, and network detection and response, with SIEM as its primary category. CISO Tribune files Stellar Cyber under SIEM, AI SOC analysts, MDR and managed SOC, also with SIEM as its primary category. Guardsix sells Guardsix SIEM, Guardsix NDR, Guardsix SOAR and Guardsix Governance, and its SIEM is self-hosted and air-gappable with node-based pricing. Stellar Cyber sells the Stellar Cyber Open XDR Platform, which unifies SIEM, network detection and response, identity threat detection and response, and behavior analytics. Stellar Cyber says its license is consumption-based, and that Open XDR can be deployed on-premises, from the cloud, or co-managed by an MSSP.

Both companies pair SIEM with network detection and response, and both describe their offerings as built for lean teams and MSSPs. Guardsix builds its content packs around NIS2, DORA and GDPR, and aims at European organisations in energy, healthcare, government and public services. Guardsix Governance is aimed first at hospital IT and compliance teams. Stellar Cyber lists more than 400 integrations and bi-directional integrations for 32 EDRs. FUJISOFT introduced Stellar Cyber to its own company in 2018 and has provided SOC services using it since 2020.

Guardsix is headquartered in Copenhagen, Denmark, and has been owned by Summa Equity since 2023. Guardsix was formerly Logpoint, which officially announced its transformation into Guardsix on March 12, 2026. Stellar Cyber is privately held. On October 5, 2026, Stellar Cyber announced version 7.0 of its security operations platform, adding AI case triage, case metrics and expanded automated response.

What it sells: Guardsix

What Guardsix SIEM does[4][7][8][9][10]
Guardsix SIEM delivers sovereign log management across hybrid, on-prem, OT and cloud. It is self-hosted and air-gappable, with node-based pricing. Ready-to-use content packs are aligned with NIS2, DORA and GDPR requirements.
What Guardsix NDR does[4][9]
Guardsix NDR pairs with Guardsix SIEM as one platform. It uses machine-learning analytics and stitches related signals into a single timeline across the seven phases of an attack. Guardsix says any analyst on a lean team can use it productively from day one.
What Guardsix SOAR does[4][10]
Guardsix SOAR provides automated investigation and response workflows built into the same platform as Guardsix SIEM. Playbooks execute locally.
What Guardsix Governance does[4][12]
Guardsix Governance for Healthcare gives hospital IT and compliance teams the visibility, reporting and audit trails that healthcare regulators expect. Reviewers comment, approve and escalate in-browser, and every action is preserved alongside the evidence.

Questions about Guardsix and Stellar Cyber

What do Guardsix and Stellar Cyber sell?
Guardsix sells Guardsix SIEM, Guardsix NDR, Guardsix SOAR and Guardsix Governance. Stellar Cyber sells Stellar Cyber Open XDR Platform.
Are Guardsix and Stellar Cyber in the same category?
Yes. SIEM is the primary category of both on CISO Tribune.
Where are Guardsix and Stellar Cyber headquartered?
Guardsix is headquartered in Copenhagen, Denmark.
Who owns Guardsix and Stellar Cyber?
Guardsix is owned by Summa Equity, since 2023. Stellar Cyber is privately held.
Who are Guardsix and Stellar Cyber sold to?
From its own pages, Guardsix sells mainly to lean security teams at European organisations in energy, healthcare, government and public services. Stellar Cyber describes its open SecOps platform as built for lean security teams and MSSPs.
What have Guardsix and Stellar Cyber announced recently?
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 Guardsix

Guardsix is a European security company that sells a sovereign security platform for lean defenders, with products for SIEM, NDR, SOAR, fleet management and access governance.[1][14]

Guardsix says its platform is aimed at European organisations that protect society, such as energy, healthcare and public services, and the partners who serve them. Guardsix says cloud-first security shifts control away from defenders while leaving accountability behind, and says it closes that gap by giving customers control over their data, deployment and operations. Guardsix says it designs for European legal and operational requirements, partners with regional cloud providers, and offers on-prem and sovereign-ready deployments. Guardsix offers on-demand or instructor-led training to help analysts grow from day one.

Guardsix SIEM is for lean teams defending Europe in energy, healthcare and government, and for the MSSPs who serve them. Guardsix says it delivers sovereign log management across hybrid, on-prem, OT and cloud environments, and continuous audit-ready evidence for NIS2, DORA and GDPR Article 32. Guardsix SIEM is self-hosted and air-gappable, and its pricing is node-based, so spend scales with the infrastructure rather than with data volume. Content packs aligned with NIS2, DORA and GDPR requirements are ready to use. Guardsix SIEM brings logs from IT estates, OT environments, identity systems, network devices and applications into a single instance that the customer controls.[7][9][11]

Guardsix NDR pairs with Guardsix SIEM as one platform with a chain of events across IT and OT. Guardsix says it uses machine-learning analytics and stitches related signals into a timeline across the seven phases of an attack. Guardsix says Guardsix NDR is designed so any analyst on a lean team can use it productively from day one. Guardsix SOAR is the automation and response layer of Guardsix SIEM, and its playbooks execute locally. Alerts from Guardsix SIEM and NDR enter SOAR with full context already attached, and Guardsix SOAR can expand with hundreds of additional integrations across EDR, identity, cloud and OT.[9][10]

Guardsix Governance for Healthcare gives hospital IT and compliance teams the visibility, reporting and audit trails that healthcare regulators expect. Guardsix says the access control model it built first for healthcare applies to any regulated environment where access has to be visible, explainable and defensible.[12]

Guardsix describes two audiences. For critical national infrastructure operators, Guardsix says it helps them. Guardsix points to hospitals, energy grids, water management and transportation as systems whose failure harms communities. Guardsix says it prices by the number of nodes, devices or entities in an environment.[13]

Guardsix was formerly Logpoint, which officially announced its transformation into Guardsix on March 12, 2026. Guardsix traces its history to a company founded in Denmark as a cybersecurity consulting business. Swedish investment firm Summa Equity acquired a majority stake in Logpoint, and Guardsix names Summa as its majority investor. Logpoint acquired the Danish cybersecurity company Muninn, specialised in AI-driven NDR. Logpoint also acquired the Israeli company SecBI, specialising in SOAR, XDR and automated threat detection. Mikkel Drucker joined Logpoint as CEO. Guardsix A/S carries the company reg. no. 26 30 19 39, and Guardsix says it is EU-HQ and EU-governed.[1][2][5][10][11][12]

Guardsix on the record

Sources

Guardsix full record

  1. [1]Command centreGuardsix · guardsix.com · undated page, accessed September 27, 2026 · Tier A
  2. [2]34576478235293 Logpoint is now guardsixGuardsix · servicedesk.guardsix.com · published March 12, 2026 · Tier A
  3. [3]Summa equity invests in logpoint to create european cybersecurity powerhouseSumma Equity · summaequity.com · published March 2, 2023 · Tier A
  4. [4]Guardsix | Your closest ally in cyber securityGuardsix · undated page, accessed October 25, 2026 · Tier A
  5. [5]Product UpdatesGuardsix · undated page, accessed October 25, 2026 · Tier A
  6. [6]About guardsix | European Cybersecurity AllyGuardsix · undated page, accessed November 3, 2026 · Tier A
  7. [7]Guardsix SIEM | Built for Lean Security TeamsGuardsix · undated page, accessed November 3, 2026 · Tier A
  8. [8]Guardsix for Compliance | NIS2Guardsix · undated page, accessed November 3, 2026 · Tier A
  9. [9]Guardsix NDR | Network Detection & ResponseGuardsix · undated page, accessed November 3, 2026 · Tier A
  10. [10]Guardsix SOAR | Security Automation & ResponseGuardsix · undated page, accessed November 3, 2026 · Tier A
  11. [11]Guardsix Fleet | Centralised Security OperationsGuardsix · undated page, accessed November 3, 2026 · Tier A
  12. [12]Guardsix Governance | Audit-ready access controlGuardsix · undated page, accessed November 3, 2026 · Tier A
  13. [13]Guardsix Pricing | Predictable Cyber Security Platform CostsGuardsix · undated page, accessed November 3, 2026 · Tier A
  14. [14]Master Terms of Service for SaaS-version of Logpoint SIEMGuardsix · undated page, accessed November 3, 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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