CISO Tribune

Vendor comparison · 2 companies

Quorum Cyber vs Surefire Cyber

Quorum Cyber delivers Microsoft-first, threat-led cyber security services. Surefire Cyber is a cyber incident response firm with an end-to-end insurance driven platform that includes immediate containment, digital forensics, in-house negotiation, and restoration. CISO Tribune files both under Incident response and forensics. 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.

Change the companies

Up to four companies side by side.

  • Quorum Cyber
  • Surefire Cyber
Quorum Cyber vs Surefire Cyber: Products, Customers and Funding Compared
Quorum CyberQuorum Cyber delivers Microsoft-first, threat-led cyber security services.quorumcyber.comSurefire CyberSurefire Cyber is a cyber incident response firm with an end-to-end insurance driven platform that includes immediate containment, digital forensics, in-house negotiation, and restoration.surefirecyber.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.
  • Claims Ready Documentation[5]Claims Ready Documentation provides structured outputs.
  • Catastrophic (CAT) Readiness[5]Catastrophic (CAT) Readiness uses purpose-built automation.
  • Portfolio Intelligence[5]Portfolio Intelligence is a real-time view into effectiveness of controls and loss drivers.
  • Reserve Diagnostics[5]Reserve Diagnostics maps early-loss impact indicators against historical trends.
  • Reduced Business Interruption[5]Reduced Business Interruption applies automated workflows to containment and restoration.
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 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: Not stated on its pages
  • Gartner Peer Insights: Not stated on its pages
Who it fits
Not written yetSurefire Cyber focuses on organizations affected by cybercrime so they can contain threats and restore operations. Its tabletop exercises are designed for smaller teams, for teams with a security plan in place, and for mature teams that want to include multiple business functions. Surefire Cyber also directs its data and insights work to clients, insurance carriers, and law firms.
Last verified
October 7, 2026November 6, 2026

Where they overlap

  • Quorum Cyber and Surefire Cyber are both filed under Incident response and forensics.

Where they differ, field by field

  • Quorum Cyber's primary category is MDR and managed SOC; Surefire Cyber's is Incident response and forensics.
  • Quorum Cyber is also filed under Security consulting and advisory and OT and ICS security. Surefire Cyber is also filed under Threat intelligence.
  • Quorum Cyber lists Clarity Defend, Clarity Extend, Clarity Protect, Clarity Data & AI, Clarity OT and 1 more. Surefire Cyber lists Claims Ready Documentation, Catastrophic (CAT) Readiness, Portfolio Intelligence, Reserve Diagnostics and Reduced Business Interruption.
  • Quorum Cyber is headquartered in Edinburgh, United Kingdom.

What it sells: Surefire Cyber

What Claims Ready Documentation does[5]
Claims Ready Documentation provides structured outputs. The outputs are described as enabling coordination for law firms and recovery for insureds.
What Catastrophic (CAT) Readiness does[5]
Catastrophic (CAT) Readiness uses purpose-built automation. The automation enables surge capacity during CAT events.
What Portfolio Intelligence does[5]
Portfolio Intelligence is a real-time view into effectiveness of controls and loss drivers. The view spans an entire book of business.
What Reserve Diagnostics does[5]
Reserve Diagnostics maps early-loss impact indicators against historical trends. The mapping provides early loss impact indication for reserve setting.
What Reduced Business Interruption does[5]
Reduced Business Interruption applies automated workflows to containment and restoration. Reduced Business Interruption includes expert-led guidance during high-stress incidents.

Questions about Quorum Cyber and Surefire Cyber

What do Quorum Cyber and Surefire Cyber sell?
Quorum Cyber sells Clarity Defend, Clarity Extend, Clarity Protect, Clarity Data & AI, Clarity OT and 1 more. Surefire Cyber sells Claims Ready Documentation, Catastrophic (CAT) Readiness, Portfolio Intelligence, Reserve Diagnostics and Reduced Business Interruption.
Are Quorum Cyber and Surefire Cyber in the same category?
They share Incident response and forensics. Quorum Cyber's primary category is MDR and managed SOC and Surefire Cyber's is Incident response and forensics.
Where are Quorum Cyber and Surefire Cyber headquartered?
Quorum Cyber is headquartered in Edinburgh, United Kingdom.
Who are Quorum Cyber and Surefire Cyber sold to?
Surefire Cyber focuses on organizations affected by cybercrime so they can contain threats and restore operations.
What have Quorum Cyber and Surefire Cyber 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

Surefire Cyber full record

  1. [1]surefirecyber.comSurefire Cyber · surefirecyber.com · undated page, accessed November 6, 2026 · Tier A
  2. [2]Company overviewSurefire Cyber · surefirecyber.com · undated page, accessed November 6, 2026 · Tier A
  3. [3]Surefire Cyber - From Response to ResilienceSurefire Cyber · undated page, accessed November 10, 2026 · Tier A
  4. [4]Surefire Cyber Appoints Chief Product Officer to Deliver Actionable Incident Response Data - Surefire CyberSurefire Cyber · undated page, accessed November 10, 2026 · Tier A
  5. [5]Surefire Cyber Launches AI IR PlatformSurefire Cyber · published February 9, 2026 · Tier A
  6. [6]Company Overview - Surefire CyberSurefire Cyber · undated page, accessed November 10, 2026 · Tier A
  7. [7]IR Plans and Exercises - Surefire CyberSurefire Cyber · undated page, accessed November 10, 2026 · Tier A

Spot a factual error? Request a correction.