CISO Tribune

Vendor comparison · 2 companies

BSI vs Quorum Cyber

BSI offers services and expertise in standards development, certification, training and assessment. Quorum Cyber delivers Microsoft-first, threat-led cyber security services. CISO Tribune files both under 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.

Change the companies

Up to four companies side by side.

  • BSI
  • Quorum Cyber
BSI vs Quorum Cyber: Products, Customers and Funding Compared
BSIBSI offers services and expertise in standards development, certification, training and assessment.bsigroup.comQuorum CyberQuorum Cyber delivers Microsoft-first, threat-led cyber security services.quorumcyber.com
What it sells
  • Standards development[3]BSI offers services and expertise in standards development.
  • Certification[2][3]BSI assesses, certifies, tests and audits people, products and processes.
  • Training[3]BSI offers courses that are continually updated with global trends and regulatory changes.
  • Consulting services[3]BSI offers consulting services for managing risk across an organization.
  • Software solutions[3]Software for managing audit, compliance and supply chain activities.
  • Tracked Changes[5]A variant of a standard that identifies differences from its previous version.
  • 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.
Categories
Headquarters
Not stated on its pagesEdinburgh, United Kingdom[1]
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
Not stated on its pages
  • September 16, 2026Quorum Cyber announced that it has signed a definitive agreement to acquire Ontinue, a managed extended detection and response provider.[12]
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
From its own pages, BSI collaborates with clients and partners across many industries. BSI recommends its own version of some standards for organisations operating in or with the UK. In our reading, BSI's maritime structures standard is aimed at people involved in the planning, design, procurement or operation of maritime access infrastructure. BSI's maritime structures standard addresses organizations responsible for designing or maintaining infrastructure that connects vessels with shore-based facilities. BSI's software solutions are aimed at organizations managing audit, compliance and supply chain activities and regulatory information.Not written yet
Last verified
October 14, 2026October 7, 2026

Where they overlap

  • BSI and Quorum Cyber are both filed under Security consulting and advisory.

Where they differ, field by field

  • BSI's primary category is Security consulting and advisory; Quorum Cyber's is MDR and managed SOC.
  • Quorum Cyber is also filed under Incident response and forensics and OT and ICS security.
  • BSI lists Standards development, Certification, Training, Consulting services, Software solutions and 1 more. Quorum Cyber lists Clarity Defend, Clarity Extend, Clarity Protect, Clarity Data & AI, Clarity OT and 1 more.
  • Quorum Cyber is headquartered in Edinburgh, United Kingdom.

What it sells: BSI

What Standards development does[3]
BSI offers services and expertise in standards development, certification, training and assessment. BSI is the UK National Standards Body and works to improve quality, safety and well-being through standardization.
What Certification does[2][3]
BSI assesses, certifies, tests and audits people, products and processes with the support of its experts. BSI states a commitment to providing its clients with impartial and independent certification services.
What Training does[3]
BSI offers courses that are continually updated with the latest global trends and regulatory changes. BSI offers training alongside standards, certification and expertise.
What Consulting services does[3]
BSI offers consulting services for managing risk across an entire organization. BSI does not provide management system or product consultancy services and certification services to the same client where there may be a conflict of interest.

Questions about BSI and Quorum Cyber

What do BSI and Quorum Cyber sell?
BSI sells Standards development, Certification, Training, Consulting services, Software solutions and 1 more. Quorum Cyber sells Clarity Defend, Clarity Extend, Clarity Protect, Clarity Data & AI, Clarity OT and 1 more.
Are BSI and Quorum Cyber in the same category?
They share Security consulting and advisory. BSI's primary category is Security consulting and advisory and Quorum Cyber's is MDR and managed SOC.
Where are BSI and Quorum Cyber headquartered?
Quorum Cyber is headquartered in Edinburgh, United Kingdom.
Who are BSI and Quorum Cyber sold to?
From its own pages, BSI collaborates with clients and partners across many industries.
What have BSI and Quorum 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 BSI

BSI offers services and expertise in standards development, certification, training and assessment. BSI is the UK National Standards Body and works to improve quality, safety and well-being through standardization. BSI has specialized capabilities in areas including energy management, supply chain risk and digital security. BSI offers standards for guidance, training, certification and expertise to its clients.[3]

BSI assesses, certifies, tests and audits people, products and processes with the support of its experts. BSI offers consulting services for managing risk across an entire organization. BSI offers software solutions for managing audit, compliance and supply chain activities and regulatory information. BSI offers courses that are continually updated with the latest global trends and regulatory changes.[3]

BSI states a commitment to providing its clients with impartial and independent certification services. BSI does not provide management system or product consultancy services and certification services to the same client where there may be a conflict of interest.[3]

BSI collaborates with clients and partners across many industries. BSI works with partners to help shape standards for the common good. BSI describes its aim in digital trust as shaping society by developing a resilient digital future that respects privacy, safety, security and reliability. BSI provides information on the revision status of popular ISO standards, including ISO 9001 and ISO 45001. BSI embeds sustainability into its own business and services.[3]

Access to related modules is exclusive to module subscribers. In a tracked changes document, additions, deletions and other content revisions are displayed as underlined or strikethrough text. BSI recommends its own version of some standards for organisations operating in or with the UK.[4][5]

BS 6349-8:2026 provides recommendations covering the design and delivery of vehicle linkspans, ramps and seaport passenger boarding bridges. BSI's maritime structures code of practice covers structural elements and the integration of mechanical systems. BSI's revised maritime structures publication reflects modern procurement practices and contemporary design requirements. BS EN 13748-2:2004 specifies the materials, properties and methods of testing for unreinforced cement-bound terrazzo tiles that are factory made and sold ready to be placed. BSI's standard on terrazzo tiles for external use covers tiles intended for external use, including roofing applications, in pedestrian areas such as walkways, terraces, commercial centres and swimming pools.[7]

Between 2001 and 2010, a 12-part series of standards was developed covering the structural design, construction and maintenance of pavements using modular paving units. BSI's pavement design code of practice excludes the design of permeable pavements which collect, attenuate and provide a drainage feature. BSI's pavement design code of practice allows reused materials provided they meet the recommendations of the appropriate clauses. BSI's whistleblowing management systems guidelines provide a framework for establishing a whistleblowing system within an organization. Organizations worldwide increasingly want to introduce or improve internal policies and processes for handling whistleblowing. Whistleblowing is the act of reporting suspected wrongdoing or risk of wrongdoing.[4][8]

BSI's timber in joinery standard helps determine the characteristics and classify, by appearance, the quality of timber in joinery. Timber joinery is a traditional post and beam wood construction technique that connects wood members without metal fasteners. Flexible sheet heating elements are converted into heating units that are incorporated into the building according to the instructions.[2][4][5][9][10]

BSI on the record

Sources

BSI full record

  1. [1]CybersecurityBSI Group · bsigroup.com · undated page, accessed October 14, 2026 · Tier A
  2. [2]bsigroup.comBSI Group · bsigroup.com · undated page, accessed October 14, 2026 · Tier A
  3. [3]Accelerating Progress Towards a Sustainable World | BSI UKBSI · undated page, accessed November 10, 2026 · Tier A
  4. [4]BS ISO 37002:2021 Whistleblowing management systemsBSI · published July 31, 2021 · Tier A
  5. [5]BS EN 1279-1:2018 Insulating glass unitsBSI · published August 31, 2018 · Tier A
  6. [6]BS 6349-8:2026 Maritime structuresBSI · published August 31, 2026 · Tier A
  7. [7]BS EN 13748-2:2004 Terrazzo tiles for external useBSI · published July 13, 2004 · Tier A
  8. [8]BS 7533-101:2021 Pavements code of practiceBSI · published November 30, 2021 · Tier A
  9. [9]BS EN 942:2007 Timber in joineryBSI · published March 30, 2007 · Tier A
  10. [10]BS EN IEC 60335-2-96 Flexible sheet heating elementsBSI · published April 30, 2022 · Tier A

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

Spot a factual error? Request a correction.