CISO Tribune

Vendor comparison · 2 companies

Quorum Cyber vs SentinelOne

Quorum Cyber delivers Microsoft-first, threat-led cyber security services. SentinelOne sells an AI-native platform with unified protection across endpoint, identity, AI, and cloud. CISO Tribune files both under MDR and managed SOC. 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
  • SentinelOne
Quorum Cyber vs SentinelOne: Products, Customers and Funding Compared
Quorum CyberQuorum Cyber delivers Microsoft-first, threat-led cyber security services.quorumcyber.comSentinelOneSentinelOne sells an AI-native platform with unified protection across endpoint, identity, AI, and cloud.sentinelone.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.
  • Purple AI[3][4][5]AI that handles triage, correlation, and routine response alongside agentic workflows.
  • Wayfinder IRR[5]On-demand breach readiness, compromise assessments, and incident response.
  • Wayfinder Emergency Response[5]On-demand access to incident response with no commitment required.
Categories
Headquarters
Edinburgh, United Kingdom[1]Mountain View, CA, USA[2]
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]
  • October 29, 2026SentinelOne announced the upcoming addition of Anthropic's Claude Mythos 5.1 to its Wayfinder Frontier AI Services offering.[7]
  • March 3, 2026SentinelOne announced the appointment of Sonalee Parekh as Chief Financial Officer, effective March 24, 2026.[8]
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[9]
  • Gartner Peer Insights: Not stated on its pages
Who it fits
Not written yetFrom its own pages, SentinelOne sells to organizations ranging from global enterprises to fast-moving teams. SentinelOne offers solutions tailored to the regulatory, operational, and threat realities of specific sectors. For analysts, Purple AI and agentic workflows handle triage, correlation, and routine response. Organizations that need expert incident response right now, without a prior commitment, can use an on-demand DFIR block.
Last verified
October 7, 2026November 5, 2026

Where they overlap

  • Quorum Cyber and SentinelOne are both filed under MDR and managed SOC.

Where they differ, field by field

  • Quorum Cyber's primary category is MDR and managed SOC; SentinelOne's is EDR and XDR.
  • Quorum Cyber is also filed under Incident response and forensics, Security consulting and advisory and OT and ICS security. SentinelOne is also filed under Cloud-native application protection (CNAPP) and Identity threat detection and response.
  • Quorum Cyber lists Clarity Defend, Clarity Extend, Clarity Protect, Clarity Data & AI, Clarity OT and 1 more. SentinelOne lists Purple AI, Wayfinder IRR and Wayfinder Emergency Response.
  • Quorum Cyber is headquartered in Edinburgh, United Kingdom. SentinelOne is headquartered in Mountain View, CA, USA.

What it sells: SentinelOne

What Purple AI does[3][4][5]
Purple AI and agentic workflows handle triage, correlation, and routine response. Purple AI investigates what analysts cannot reach in time. Purple AI accelerates investigations, analysis, and forensic workflows in SentinelOne engagements.
What Wayfinder IRR does[5]
Wayfinder IRR provides on-demand breach readiness, expert-led compromise assessments, and incident response. DFIR specialists contain, investigate, and eradicate confirmed or suspected breaches. SentinelOne offers five assessment types: General, M&A, Post-Breach, Insider Threat, and Targeted. One retainer secures a renewable pool of expert hours used across readiness, assessments, and response.
What Wayfinder Emergency Response does[5]
Wayfinder Emergency Response delivers on-demand access with no commitment required. SentinelOne offers an immediate 40-hour on-demand DFIR block that requires no retainer.

Questions about Quorum Cyber and SentinelOne

What do Quorum Cyber and SentinelOne sell?
Quorum Cyber sells Clarity Defend, Clarity Extend, Clarity Protect, Clarity Data & AI, Clarity OT and 1 more. SentinelOne sells Purple AI, Wayfinder IRR and Wayfinder Emergency Response.
Are Quorum Cyber and SentinelOne in the same category?
They share MDR and managed SOC. Quorum Cyber's primary category is MDR and managed SOC and SentinelOne's is EDR and XDR.
Where are Quorum Cyber and SentinelOne headquartered?
Quorum Cyber is headquartered in Edinburgh, United Kingdom. SentinelOne is headquartered in Mountain View, CA, USA.
Who are Quorum Cyber and SentinelOne sold to?
From its own pages, SentinelOne sells to organizations ranging from global enterprises to fast-moving teams.
What have Quorum Cyber and SentinelOne 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. October 29, 2026: SentinelOne announced the upcoming addition of Anthropic's Claude Mythos 5.1 to its Wayfinder Frontier AI Services offering.

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

SentinelOne full record

  1. [1]sentinelone.comSentinelOne · sentinelone.com · undated page, accessed November 5, 2026 · Tier A
  2. [2]CompanySentinelOne · sentinelone.com · undated page, accessed November 5, 2026 · Tier A
  3. [3]SentinelOne | AI-Powered Enterprise Cybersecurity PlatformSentinelOne · undated page, accessed November 10, 2026 · Tier A
  4. [4]Singularity™ Endpoint Security Platform | SentinelOneSentinelOne · undated page, accessed November 10, 2026 · Tier A
  5. [5]Wayfinder Incident Readiness & Response Services | SentinelOneSentinelOne · undated page, accessed November 10, 2026 · Tier A
  6. [6]LABScon24 Replay | Let Them Eat Cake: “Secure by Upgrade” Software is a National Security Threat | SentinelOneSentinelOne · published December 18, 2024 · Tier A
  7. [7]SentinelOne to Add Anthropic's Claude Mythos 5.1 to Wayfinder Frontier AI ServicesSentinelOne · published October 29, 2026 · Tier A
  8. [8]SentinelOne Appoints Sonalee Parekh as Chief Financial OfficerSentinelOne · published March 3, 2026 · Tier A
  9. [9]SentinelOne Singularity Cloud Security Reviews 2026G2 · undated page, accessed November 10, 2026 · Tier C

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