Vendor comparison · 2 companies
Leonardo provides cyber security and digital resilience offerings including managed SOC services, incident response, threat intelligence, investigation support systems and secure analytics platforms for governments, critical infrastructure operators and enterprises. Quorum Cyber delivers Microsoft-first, threat-led cyber security services. CISO Tribune files both under MDR and managed SOC, Incident response and forensics 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.
Up to four companies side by side.
| LeonardoLeonardo provides cyber security and digital resilience offerings including managed SOC services, incident response, threat intelligence, investigation support systems and secure analytics platforms for governments, critical infrastructure operators and enterprises.leonardo.com | Quorum CyberQuorum Cyber delivers Microsoft-first, threat-led cyber security services.quorumcyber.com | |
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| Headquarters | Not stated on its pages | Edinburgh, United Kingdom[1] |
| Founded | ||
| Founded | Not stated on its pages | Not stated on its pages |
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| Ownership and funding | Not stated on its pages | Not stated on its pages |
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| Named customers | Not stated on its pages | Not stated on its pages |
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| G2 and Gartner Peer Insights |
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| Who it fits | ||
| Who it fits | Not written yet | Not written yet |
| Last verified | ||
| Last verified | October 12, 2026 | October 7, 2026 |
CISO Tribune files both Leonardo and Quorum Cyber under MDR and managed SOC as the primary category, and both also appear under incident response and forensics and security consulting and advisory. Leonardo sells SOC Managed Services, described as round-the-clock detection and monitoring for national and international customers. Quorum Cyber sells Clarity Defend, a managed detection and response service with 24/7 monitoring, detection and response. Quorum Cyber describes its approach as Microsoft-first and is a Microsoft Solutions Partner for Security.
Beyond the shared categories, CISO Tribune files Leonardo under threat intelligence, and Leonardo sells Threat Intelligence that monitors the open web and dark web. Leonardo also sells Investigation Support Systems for government and law enforcement agencies, and Secure Analytics for industrial and government organizations. CISO Tribune files Quorum Cyber under OT and ICS security, and Quorum Cyber sells Clarity OT, a managed detection and response service for operational technology environments. Quorum Cyber also sells Clarity Data & AI, which addresses data governance and AI-related risks. Both companies offer incident response; Leonardo sells Incident handling and response services, and Quorum Cyber sells Incident Response Services that include retainer agreements.
Leonardo has its registered head office in Rome, Italy, while Quorum Cyber is headquartered in Edinburgh, United Kingdom. Quorum Cyber states that it protects 400+ organisations across four continents. Leonardo names governments, critical infrastructure operators and enterprises as its customers. On August 4, 2026, Leonardo US Cyber & Security Solutions introduced SignalTrace as the new name for EOC Plus, its electronic signature detection solution. On September 16, 2026, Quorum Cyber announced a definitive agreement to acquire Ontinue, a managed extended detection and response provider.
Leonardo provides cyber security and digital resilience offerings including managed SOC services, incident response, threat intelligence, investigation support systems and secure analytics platforms for governments, critical infrastructure operators and enterprises. Its registered head office is in Rome, Italy.[1][2]
Leonardo on the recordQuorum 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 recordSpot a factual error? Request a correction.