CISO Tribune

Vendor comparison · 2 companies

Grant Thornton vs Optiv

Grant Thornton sells cybersecurity advisory services that help security and privacy programs operate continuously through connected initiatives. Optiv sells cybersecurity services that advise on, deploy and operate security programs for organizations. 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.

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  • Grant Thornton
  • Optiv
Grant Thornton vs Optiv: Products, Customers and Funding Compared
Grant ThorntonGrant Thornton sells cybersecurity advisory services that help security and privacy programs operate continuously through connected initiatives.grantthornton.comOptivOptiv sells cybersecurity services that advise on, deploy and operate security programs for organizations.optiv.com
What it sells
  • Technology Modernization[2][6]Advisory work on updating an organization's technology.
  • Outsourcing Services[5]Outsourcing services that keep clients focused on their core.
  • Application Security[3][6]Services that protect applications, APIs and development pipelines.
  • Identity Security[2][3]Services for managing identities and securing access.
  • Co-Managed SIEM Service[5]A managed SIEM service with access to SIEM experts.
Categories
Headquarters
Not stated on its pagesNot 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
  • November 2, 2026Grant Thornton Advisors announced, together with New Mountain Capital and CBIZ, that it completed its $5 billion acquisition of CBIZ.[13]
  • October 21, 2026Optiv launched CyberBOT, a free cybersecurity awareness training program for classrooms, nonprofits and communities.[10]
  • August 5, 2026Optiv announced Optiv Agentic Security Operations, formerly Optiv MDR, a managed security operations model combining agentic AI and practitioner expertise.[9]
G2 and Gartner Peer Insights
  • G2: listed, seen November 3, 2026[3]
  • 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, Grant Thornton sells audit services to private equity-backed and owner-managed companies. Not-for-profit and higher education organizations are named as audit clients. Grant Thornton's cybersecurity advisory services are aimed at security and privacy programs. Adopters of blockchain, digital assets and Web3 are named as a group Grant Thornton serves. Grant Thornton's buy-side diligence draws on partnership with private equity investors.Optiv describes services for small organizations just getting started and for large corporations well into security maturity. Optiv states that security teams are managing more tools, more telemetry and more AI-driven pressure than their operating models were built to absorb. Optiv states that it is tool agnostic and works within a client's existing technology environment. Optiv says it delivers expertise to organizations across every major industry.
Last verified
October 14, 2026November 4, 2026

Where they overlap

  • Security consulting and advisory is the primary category of both Grant Thornton and Optiv.

Where they differ, field by field

  • Optiv is also filed under Managed security service providers, Incident response and forensics and Penetration testing and red team services.
  • Grant Thornton lists Technology Modernization and Outsourcing Services. Optiv lists Application Security, Identity Security and Co-Managed SIEM Service.

How they differ

CISO Tribune files Grant Thornton under Security consulting and advisory, and files Optiv under that same primary category along with Managed security service providers, Incident response and forensics, and Penetration testing and red team services. Grant Thornton sells cybersecurity advisory services aimed at security and privacy programs, and it also sells technology modernization, outsourcing, audit, tax and transaction work. Optiv sells services that advise on, deploy and operate security programs, including application security, identity security and a co-managed SIEM service.

The two overlap in identity governance and access management, which Grant Thornton names, and in identity security, which Optiv sells. Grant Thornton also names data privacy consulting, while Optiv offers penetration-style testing that simulates real-world attacks and managed monitoring through its SIEM service. Optiv names financial services, health care, government, energy and retail among its industries, and says it serves 73% of the Fortune 100. Optiv states that it is tool agnostic and works within a client's existing technology environment.

Grant Thornton works across a network of 156+ markets. Optiv is backed by KKR. On November 2, 2026, Grant Thornton Advisors announced with New Mountain Capital and CBIZ that it completed its $5 billion acquisition of CBIZ. On October 21, 2026, Optiv launched CyberBOT, a free cybersecurity awareness training program for classrooms, nonprofits and communities. On August 5, 2026, Optiv announced Optiv Agentic Security Operations, formerly Optiv MDR.

What it sells: Grant Thornton

What Technology Modernization does[2][6]
Grant Thornton's technology modernization team applies deep technology, data, cloud and automation experience with proven partners to find the path to client goals. Offerings named include IT strategy, application portfolio strategy and IT cost optimization.

What it sells: Optiv

What Application Security does[3][6]
Optiv's application security services protect applications, APIs and development pipelines by identifying vulnerabilities and improving secure coding practices throughout the software lifecycle. Optiv AppSec services help organizations design and build application security programs.
What Identity Security does[2][3]
Optiv's identity security services secure access across an organization. Identity Security covers managing identities, enforcing least privilege and improving authentication, governance and visibility.
What Co-Managed SIEM Service does[5]
Optiv's co-managed SIEM service helps monitor security events with just-in-time threat intelligence. In the service, the SIEM sends alerts to threat analysts in the SOC for human analysis.

Questions about Grant Thornton and Optiv

What do Grant Thornton and Optiv sell?
Grant Thornton sells Technology Modernization and Outsourcing Services. Optiv sells Application Security, Identity Security and Co-Managed SIEM Service.
Are Grant Thornton and Optiv in the same category?
Yes. Security consulting and advisory is the primary category of both on CISO Tribune.
Who are Grant Thornton and Optiv sold to?
From its own pages, Grant Thornton sells audit services to private equity-backed and owner-managed companies. Optiv describes services for small organizations just getting started and for large corporations well into security maturity.
What have Grant Thornton and Optiv announced recently?
November 2, 2026: Grant Thornton Advisors announced, together with New Mountain Capital and CBIZ, that it completed its $5 billion acquisition of CBIZ. October 21, 2026: Optiv launched CyberBOT, a free cybersecurity awareness training program for classrooms, nonprofits and communities.

About Grant Thornton

Grant Thornton sells cybersecurity advisory services that help security and privacy programs operate continuously through connected initiatives. Grant Thornton states that organizations need better visibility across relevant identities, data, systems and third-party relationships. Grant Thornton says cyber, AI, fraud, compliance and audit risks increasingly overlap, but many organizations still manage them in silos.[1]

Grant Thornton offers data privacy consulting to protect sensitive information and support business objectives. Grant Thornton names identity governance and access management capabilities to protect critical systems and information. Grant Thornton names information security consulting and cyber defense to strengthen resilience against evolving threats. In Grant Thornton's 2026 AI Impact Survey, seventy-eight percent of business executives lack strong confidence that they could pass an independent AI governance audit within 90 days.[1][4]

Grant Thornton says cyber, risk, compliance, privacy and resilience challenges are interconnected. Grant Thornton says it helps organizations manage risk as a connected system through integrated risk management, specialized expertise and solutions designed for measurable outcomes. Grant Thornton Advisors launched a Quantitative Risk service and CoE to support growing demand for risk, modelling and analytics expertise.[5]

Grant Thornton says its Outsourcing Services keep clients focused on their core. Grant Thornton says it guides every stage of a client's automation journey. Grant Thornton's technology modernization team applies deep technology, data, cloud and automation experience with proven partners to find the path to client goals. Grant Thornton names IT strategy, application portfolio strategy and IT cost optimization among its offerings. Grant Thornton and Stax have united to provide end-to-end insight across the full M&A value chain. Grant Thornton's buy-side diligence is grounded in decades of partnership with private equity investors. Grant Thornton offers Exit Planning and Sell-side Diligence for management teams, sponsors and advisors. For a transaction that involves a carve-out, Grant Thornton assists with the transitional services agreements (TSAs), planning and post-close management of the project.[5][6]

Grant Thornton's Enterprise Assurance Services bring independent attestation and certification under a single, integrated delivery model. Grant Thornton's professionals perform audits of companies across the globe. Grant Thornton says its audits combine predictive modeling, patented ledger analytics technology and artificial intelligence. Grant Thornton says it uses its technology to test full populations of data rather than sampling. Grant Thornton says its teams deliver audits under PCAOB standards. Grant Thornton tailors audit services for private equity-backed and owner-managed companies. Grant Thornton says not-for-profit and higher education organizations need audit providers who understand their priorities and invest in lasting relationships. Grant Thornton says it can help adopters of blockchain, digital assets and Web3 overcome obstacles.[8][10]

On tax, Grant Thornton says its focus is saving time and money, without sacrificing quality, while helping clients take advantage of enterprise tax automation. Grant Thornton says it can help businesses transform VAT/GST compliance.[11]

Grant Thornton works across a network of 156+ markets. Grant Thornton describes alyx as a streamlined platform that connects real people with the right resources and latest tech.[1][12]

Grant Thornton on the record

Sources

Grant Thornton full record

  1. [1]Cyber & Privacy | Grant ThorntonGrant Thornton · undated page, accessed October 14, 2026 · Tier A
  2. [2]Audit & Assurance, Tax and Advisory Services | Grant ThorntonGrant Thornton · undated page, accessed November 1, 2026 · Tier A
  3. [3]Grant Thornton Reviews 2026: Details, Pricing, & Features | G2G2 · undated page, accessed November 1, 2026 · Tier C
  4. [4]2026 AI Impact Survey Report | Grant ThorntonGrant Thornton · undated page, accessed November 3, 2026 · Tier A
  5. [5]Advisory Services | Grant ThorntonGrant Thornton · undated page, accessed November 3, 2026 · Tier A
  6. [6]Technology Modernization | Grant ThorntonGrant Thornton · undated page, accessed November 3, 2026 · Tier A
  7. [7]Transaction Advisory | Grant ThorntonGrant Thornton · undated page, accessed November 3, 2026 · Tier A
  8. [8]Audit & Assurance Services | Grant ThorntonGrant Thornton · undated page, accessed November 3, 2026 · Tier A
  9. [9]Financial Statement Audits | Grant ThorntonGrant Thornton · undated page, accessed November 3, 2026 · Tier A
  10. [10]Audit Technology Services | Grant ThorntonGrant Thornton · undated page, accessed November 3, 2026 · Tier A
  11. [11]Tax Technology & Transformation | Grant ThorntonGrant Thornton · undated page, accessed November 3, 2026 · Tier A
  12. [12]About Grant Thornton | Grant ThorntonGrant Thornton · undated page, accessed November 3, 2026 · Tier A
  13. [13]Newsroom | Grant ThorntonGrant Thornton · published November 2, 2026 · Tier A

Optiv full record

  1. [1]Optiv sells advisory consulting and transformation act business vobisOptiv · optiv.com · published June 2, 2026 · Tier A
  2. [2]About Us | OptivOptiv · undated page, accessed November 10, 2026 · Tier A
  3. [3]Optiv Services | OptivOptiv · undated page, accessed November 10, 2026 · Tier A
  4. [4]Optiv | Cybersecurity Consultants and SolutionsOptiv · undated page, accessed November 10, 2026 · Tier A
  5. [5]Co-Managed SIEM Services Improve Security | Optiv | Learn MoreOptiv · undated page, accessed November 10, 2026 · Tier A
  6. [6]Threat & Vulnerability Remediation Solutions | OptivOptiv · undated page, accessed November 10, 2026 · Tier A
  7. [7]Cybersecurity Solutions | Innovation and Risk Reduction | OptivOptiv · undated page, accessed November 10, 2026 · Tier A
  8. [8]Our Leadership Team | OptivOptiv · undated page, accessed November 10, 2026 · Tier A
  9. [9]Optiv Introduces Agentic Security Operations, Redefining Managed Security Services with the Power of Google Security Operations and Extensive Wiz IntegrationPRNewswire · published August 5, 2026 · Tier A
  10. [10]Optiv Launches CyberBOT®, A Free Cybersecurity Awareness Training Program for Classrooms, Nonprofits and Communities | OptivOptiv · published October 21, 2026 · Tier A

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