CISO Tribune

Vendor comparison · 2 companies

Quorum Cyber vs Siemens

Quorum Cyber delivers Microsoft-first, threat-led cyber security services. Siemens sells technology products that include hardware, software and services. CISO Tribune files both under 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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  • Quorum Cyber
  • Siemens
Quorum Cyber vs Siemens: Products, Customers and Funding Compared
Quorum CyberQuorum Cyber delivers Microsoft-first, threat-led cyber security services.quorumcyber.comSiemensSiemens sells technology products that include hardware, software and services.siemens.com
What it sells
  • 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.
  • SIMATIC WinCC[6]SIMATIC WinCC systems are designed for machine visualization (HMI) and for complex SCADA applications in all industries.
  • Gridscale X[9]Gridscale X unifies grid planning, operations, asset management, and metering in a single, open and interoperable platform.
  • Building X[7]Building X is a platform for managing and optimizing building operations.
  • Totally Integrated Power[11]Totally Integrated Power offers electrical planners training and workshops on planning integrated power distribution.
  • Energy Systems[10]Siemens offers insulated medium-voltage switchgear for use indoors, outdoors or offshore.
  • eMobility[13]Siemens eMobility offers solutions to support the electrification of transportation in depot and public charging applications.
Categories
Headquarters
Edinburgh, United Kingdom[1]Not stated on its pages
Founded
Not stated on its pages1847
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
  • September 16, 2026Quorum Cyber announced that it has signed a definitive agreement to acquire Ontinue, a managed extended detection and response provider.[12]
Not 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 1, 2026[3]
  • Gartner Peer Insights: listed, seen November 1, 2026[4]
Who it fits
Not written yetSiemens names transit operators, logistics companies and charging network providers as users of its eMobility solutions. Siemens provides electrical planners with technical documents covering basic network and plant engineering. Siemens names chemical, oil and gas, pharmaceutical, refining, and food and beverage as process industries that use gPROMS.
Last verified
October 7, 2026October 12, 2026

Where they overlap

  • Quorum Cyber and Siemens are both filed under OT and ICS security.

Where they differ, field by field

  • Quorum Cyber's primary category is MDR and managed SOC; Siemens's is OT and ICS security.
  • Quorum Cyber is also filed under Incident response and forensics and Security consulting and advisory.
  • Quorum Cyber lists Clarity Defend, Clarity Extend, Clarity Protect, Clarity Data & AI, Clarity OT and 1 more. Siemens lists SIMATIC WinCC, Gridscale X, Building X, Totally Integrated Power, Energy Systems and 1 more.
  • Quorum Cyber is headquartered in Edinburgh, United Kingdom.
  • Siemens was founded in 1847.

What it sells: Siemens

What Gridscale X does[9]
Gridscale X has capabilities across planning, operations and meter data management. Gridscale X allows users to build, integrate and run their own applications directly on the platform.
What Totally Integrated Power does[11]
Siemens electrical planning support consists of project support, SIMARIS planning tools, BIM, technical documents and trainings. Totally Integrated Power offers electrical planners training and workshops on planning integrated power distribution.

Questions about Quorum Cyber and Siemens

What do Quorum Cyber and Siemens sell?
Quorum Cyber sells Clarity Defend, Clarity Extend, Clarity Protect, Clarity Data & AI, Clarity OT and 1 more. Siemens sells SIMATIC WinCC, Gridscale X, Building X, Totally Integrated Power, Energy Systems and 1 more.
Are Quorum Cyber and Siemens in the same category?
They share OT and ICS security. Quorum Cyber's primary category is MDR and managed SOC and Siemens's is OT and ICS security.
Where are Quorum Cyber and Siemens headquartered?
Quorum Cyber is headquartered in Edinburgh, United Kingdom.
When were Quorum Cyber and Siemens founded?
Siemens was founded in 1847.
Who are Quorum Cyber and Siemens sold to?
Siemens names transit operators, logistics companies and charging network providers as users of its eMobility solutions.
What have Quorum Cyber and Siemens 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 Quorum Cyber

Quorum Cyber delivers Microsoft-first, threat-led cyber security services. Quorum Cyber was founded in Edinburgh in 2016. Federico Charosky founded Quorum Cyber. Quorum Cyber is a Microsoft Solutions Partner for Security and works with the Microsoft Security stack, including Microsoft 365 Defender and Microsoft Sentinel.

Quorum Cyber says AI changes how organisations work and how attackers operate. Quorum Cyber helps security teams protect data, manage emerging risks and enable secure adoption.

Clarity is more than the name of Quorum Cyber's customer platform and managed security services. Quorum Cyber unifies Microsoft 365 Defender and Microsoft Sentinel in Clarity, turning raw signals into prioritised incidents. Quorum Cyber offers three managed detection and response services, plus a dedicated data security service.[6]

Quorum Cyber's Cyber Resilience Assessment evaluates how well an organisation can manage cyber disruption. Quorum Cyber's Security Maturity Assessment looks at the effectiveness of a wider security programme, including governance, controls and risk management.[7]

Quorum Cyber has an Incident Response team that helps organisations investigate and manage cyber incidents. Quorum Cyber's Security Operations Centre works to detect and respond to customer threats. Quorum Cyber offers an incident response retainer that customers can initiate. Quorum Cyber offers Managed XDR, which integrates with Microsoft Security Technology. Quorum Cyber works with the generative AI capabilities of Copilot for Security to help defend customers against cyber threats. Quorum Cyber has a Threat Intelligence team. Following two acquisitions in 2024, Quorum Cyber's services range from phishing simulation and managed services to incident response and ransom negotiation.[7][8][9][10]

Quorum Cyber states that it protects 400+ organisations across four continents. Quorum Cyber has over 350 employees across the UK, US, Canada and UAE. Quorum Cyber is also a member of the Microsoft Intelligent Security Association and a Microsoft Security Copilot Partner.[6][7][11]

Quorum Cyber on the record

Sources

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

Siemens full record

  1. [1]Industrial cybersecurity servicesSiemens · siemens.com · undated page, accessed October 12, 2026 · Tier A
  2. [2]AboutSiemens · siemens.com · undated page, accessed October 12, 2026 · Tier A
  3. [3]Page 6 | Insights Hub Reviews 2026: Details, Pricing, & Features | G2G2 · undated page, accessed November 1, 2026 · Tier C
  4. [4]Siemens Reviews, Ratings & Features 2026 | Gartner Peer InsightsGartner Peer Insights · undated page, accessed November 1, 2026 · Tier C
  5. [5]Products | SiemensSiemens · undated page, accessed November 10, 2026 · Tier A
  6. [6]SIMATIC WinCC systems | SiemensSiemens · undated page, accessed November 10, 2026 · Tier A
  7. [7]Siemens home | SiemensSiemens · undated page, accessed November 10, 2026 · Tier A
  8. [8]SIMATIC Industrial Computing | SiemensSiemens · undated page, accessed November 10, 2026 · Tier A
  9. [9]Gridscale X | SiemensSiemens · undated page, accessed November 10, 2026 · Tier A
  10. [10]Medium-voltage systems | SiemensSiemens · undated page, accessed November 10, 2026 · Tier A
  11. [11]Totally Integrated Power | SiemensSiemens · undated page, accessed November 10, 2026 · Tier A
  12. [12]AI-Driven Plug-and-Play Building Energy Optimization | SiemensSiemens · undated page, accessed November 10, 2026 · Tier A
  13. [13]eMobility | SiemensSiemens · undated page, accessed November 10, 2026 · Tier A
  14. [14]gPROMS | SiemensSiemens · undated page, accessed November 10, 2026 · Tier A
  15. [15]DELTA switches and sockets | SiemensSiemens · undated page, accessed November 10, 2026 · Tier A

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