CISO Tribune

Vendor comparison · 2 companies

Quorum Cyber vs Rackspace Technology

Quorum Cyber delivers Microsoft-first, threat-led cyber security services. Rackspace Technology is the operator of the full enterprise AI stack, from governed private cloud to AI inference and agents in production. CISO Tribune files both under MDR and managed SOC and Security consulting and advisory. 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
  • Rackspace Technology
Quorum Cyber vs Rackspace Technology: Products, Customers and Funding Compared
Quorum CyberQuorum Cyber delivers Microsoft-first, threat-led cyber security services.quorumcyber.comRackspace TechnologyRackspace Technology is the operator of the full enterprise AI stack, from governed private cloud to AI inference and agents in production.rackspace.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.
  • Security and Resiliency[5][6]Rackspace integrates 24x7x365 security operations and cyber recovery across the environments it operates.
  • Rackspace Managed Extended Detection and Response[6]A 24x7x365 service built on Microsoft Sentinel.
  • Managed Operations[5][8]Operates infrastructure, applications and data with integrated security, reliability, performance and ongoing optimization.
  • Platform Automation[5][9]A platform engineering service delivered through a dedicated Rackspace Elastic Engineering pod.
  • Forward Deployed EngineeringEngineers work beside customer teams to build, run and improve AI in production.
Categories
Headquarters
Edinburgh, United Kingdom[1]Not stated on its pages
Founded
Not stated on its pagesNot stated on its pages
Ownership and funding
Not stated on its pagesPublic (NASDAQ: RXT)[2][3][4][5][7][8][9][10][12]
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]
  • January 16, 2026Rackspace Technology's UK Sovereign Services achieved VMware Sovereign Cloud Partner Status.[11]
G2 and Gartner Peer Insights
  • G2: Not stated on its pages
  • Gartner Peer Insights: Not stated on its pages
  • G2: listed, seen November 10, 2026[12]
  • Gartner Peer Insights: Not stated on its pages
Who it fits
Not written yetNot written yet
Last verified
October 7, 2026October 14, 2026

Where they overlap

  • Quorum Cyber and Rackspace Technology are both filed under MDR and managed SOC and Security consulting and advisory.

Where they differ, field by field

  • Quorum Cyber's primary category is MDR and managed SOC; Rackspace Technology's is Managed security service providers.
  • Quorum Cyber is also filed under Incident response and forensics and OT and ICS security.
  • Quorum Cyber lists Clarity Defend, Clarity Extend, Clarity Protect, Clarity Data & AI, Clarity OT and 1 more. Rackspace Technology lists Security and Resiliency, Rackspace Managed Extended Detection and Response, Managed Operations, Platform Automation and Forward Deployed Engineering.
  • Quorum Cyber is headquartered in Edinburgh, United Kingdom.
  • Rackspace Technology is a public company listed on NASDAQ as RXT.

What it sells: Rackspace Technology

What Rackspace Managed Extended Detection and Response does[6]
Rackspace Managed Extended Detection and Response integrates more than 300 security technologies and log sources and uses AI-assisted detections mapped to the MITRE ATT&CK framework. The service supports proactive threat hunting and automated response through the Rackspace Cyber Defense Center.
What Managed Operations does[5][8]
Rackspace provides 24x7x365 operations across every environment, with one accountable team. Rackspace runs managed operations across AWS, Google Cloud, Microsoft and VMware under one accountable team.
What Platform Automation does[5][9]
Rackspace designs, builds and operates platforms that provide self-service provisioning, infrastructure as code, delivery pipelines, Kubernetes, policy automation and observability across private and public cloud. Rackspace supports AWS, Microsoft Azure, Google Cloud and Rackspace Private Cloud, along with Kubernetes across cloud and on-premises environments.

Questions about Quorum Cyber and Rackspace Technology

What do Quorum Cyber and Rackspace Technology sell?
Quorum Cyber sells Clarity Defend, Clarity Extend, Clarity Protect, Clarity Data & AI, Clarity OT and 1 more. Rackspace Technology sells Security and Resiliency, Rackspace Managed Extended Detection and Response, Managed Operations, Platform Automation and Forward Deployed Engineering.
Are Quorum Cyber and Rackspace Technology in the same category?
They share MDR and managed SOC and Security consulting and advisory. Quorum Cyber's primary category is MDR and managed SOC and Rackspace Technology's is Managed security service providers.
Where are Quorum Cyber and Rackspace Technology headquartered?
Quorum Cyber is headquartered in Edinburgh, United Kingdom.
Who owns Quorum Cyber and Rackspace Technology?
Rackspace Technology is a public company listed on NASDAQ as RXT.
What have Quorum Cyber and Rackspace Technology 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. January 16, 2026: Rackspace Technology's UK Sovereign Services achieved VMware Sovereign Cloud Partner Status.

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

Rackspace Technology full record

  1. [1]SecurityRackspace Technology · rackspace.com · undated page, accessed October 14, 2026 · Tier A
  2. [2]Rackspace technology announces plans accelerate enterprise aiGLOBE NEWSWIRE · ir.rackspace.com · published July 9, 2026 · Tier A
  3. [3]Rackspace Technology Reviews - Gartner Peer InsightsGartner Peer Insights · undated page, accessed November 2, 2026 · Tier C
  4. [4]Investor Relations | Rackspace Technology, Inc.Rackspace Technology · undated page, accessed November 10, 2026 · Tier A
  5. [5]Services – RackspaceRackspace Technology · undated page, accessed November 10, 2026 · Tier A
  6. [6]Security and Resiliency – RackspaceRackspace Technology · undated page, accessed November 10, 2026 · Tier A
  7. [7]RackspaceRackspace Technology · undated page, accessed November 10, 2026 · Tier A
  8. [8]About – RackspaceRackspace Technology · undated page, accessed November 10, 2026 · Tier A
  9. [9]Platform Automation – RackspaceRackspace Technology · undated page, accessed November 10, 2026 · Tier A
  10. [10]Central and North West London NHS Foundation Trust – RackspaceRackspace Technology · undated page, accessed November 10, 2026 · Tier A
  11. [11]Rackspace Technology Secures VMware Sovereign Cloud Partner StatusRackspace · published January 16, 2026 · Tier A
  12. [12]Rackspace Managed Private Cloud Reviews & Product DetailsG2 · undated page, accessed November 10, 2026 · Tier C

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