Top Cybersecurity Consulting Firmsin 2026

Accenture, Deloitte, IBM, Coalfire and NCC Group are ranked on depth of expertise, industry focus and how well their advice turns into real security gains.

Cybersecurity Consulting Ranked

Vendors

Last Updated

October 9, 2026

Accenture, Deloitte, IBM, Coalfire and NCC Group are ranked on depth of expertise, industry focus and how well their advice turns into real security gains.

Not sure which to pick? See the top 3 side by side: Accenture Cybersecurity Services, Diligent One Platform, ServiceNow Integrated Risk Management.

Compare the top 3

#1 Top Rank

Editorial #1 ChoiceCybersecurity Consulting

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Accenture Cybersecurity Services

byAccentureVerified

Dublin, Ireland10,001+

Accenture Cybersecurity Services: zero trust advisory and proactive threat hunting. Built for 24/7 SOC operations. Compare Cybersecurity Consulting alternatives.

Enterprise managed cyber defense24/7 SOC operationsCyber incident responseStrategic security advisory

Deployment

Cloud, Hybrid

Integrations

Microsoft Sentinel, Splunk, CrowdStrike +5

Target Users

Global Enterprises, Financial Services, Healthcare, Defense, Energy, Telecommunications, Government, Aerospace

Enterprise Ready:SSO ReadyRBACREST APICompliance: ISO 27001; SOC 2; FedRAMP; HIPAA; PCI DSS; GDPR

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#2 Runner Up

GRC

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Diligent One Platform

byDiligentVerified

New York, New York, USA5,000+

Diligent One Platform from Diligent focuses on executive reporting. Key capabilities: ERM integration. Compare it with the leading Compliance Management alternatives.

Board-level cyber risk governanceEnterprise risk managementExecutive reportingRegulatory disclosure compliance

Deployment

SaaS, Cloud

Integrations

Microsoft 365, ServiceNow, Jira +4

Target Users

Enterprise, Board of Directors, Financial, Healthcare, Technology, Banking & Finance, Energy, Manufacturing

Enterprise Ready:SSO ReadyRBACREST APICompliance: SOC 2 Type II; ISO 27001; SEC Cybersecurity Rules; GDPR; HIPAA

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#3 Ranked

Cyber Risk Management

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ServiceNow Integrated Risk Management

byServiceNowVerified

Santa Clara, California, USA25,000+

ServiceNow Integrated Risk Management: integrated risk management and quantitative cyber risk modeling. Built for regulatory change governance. Compare GRC alternatives.

Quantitative cyber risk analysisContinuous operational risk trackingRegulatory change governanceExecutive board risk reporting

Deployment

SaaS, Cloud

Integrations

ServiceNow CMDB, ServiceNow SIR, AWS +3

Target Users

Financial Services, Healthcare, Government, Critical Infrastructure, Retail, Telecom

Enterprise Ready:SSO ReadyRBACREST APICompliance: NIST Cybersecurity Framework; ISO 27001; DORA; SOC 2; PCI-DSS; HIPAA

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Cybersecurity Consulting

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EY Cybersecurity

byEYVerified

London, United Kingdom400,000+

Get the facts on EY Cybersecurity: OT/IoT cybersecurity. Built for cyber risk governance. Compare it with other Cybersecurity Consulting options before you decide.

Cyber risk governanceBoard cyber reportingZero-trust cloud transformationIncident crisis management simulation

Deployment

Cloud

Integrations

Microsoft, AWS, Google Cloud +3

Target Users

Financial Services, Healthcare, Energy, Government, Consumer Goods, Automotive

Enterprise Ready:Compliance: ISO 27001; SOC 2; DORA; NIS 2; SEC Cybersecurity Rules; GDPR; HIPAA

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Cybersecurity Consulting

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PwC Cybersecurity & Privacy

byPwCVerified

London, United Kingdom10,001+

PwC Cybersecurity & Privacy: board risk reporting and cloud security governance. Built for global data privacy compliance. Compare Cybersecurity Consulting alternatives.

Enterprise cyber risk governanceGlobal data privacy complianceCloud cybersecurity transformationIncident crisis management advisory

Deployment

Cloud

Integrations

Microsoft, AWS, Google Cloud +3

Target Users

Financial Services, Healthcare, Technology, Energy, Government, Retail

Enterprise Ready:Compliance: ISO 27001; SOC 2; GDPR; HIPAA; SEC Cyber Rules; NIS 2; DORA

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Cybersecurity Consulting

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Booz Allen Cyber Engineering

byBooz Allen HamiltonVerified

McLean, Virginia, USA10,001+

Booz Allen Cyber Engineering offers nation-state threat hunting. Use it for national security cyber defense. See Cybersecurity Consulting alternatives.

National security cyber defenseCritical infrastructure protectionZero-trust engineeringMilitary weapon system cyber hardening

Deployment

Hybrid

Integrations

MITRE ATT&CK, NIST SP 800-53, DoD RMF +2

Target Users

Defense, Intelligence, Federal Government, Critical Infrastructure, Energy

Enterprise Ready:Compliance: NIST SP 800-53; DoD RMF; CMMC Level 3; FedRAMP High; FIPS 140-2

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Cybersecurity Consulting

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Capgemini Cybersecurity Services

byCapgeminiVerified

Paris, France340,000+

Capgemini Cybersecurity Services: zero-trust advisory and industrial OT security. Built for cloud security migration. Compare Cybersecurity Consulting alternatives.

Enterprise cybersecurity transformation24/7 managed threat detectionCloud security migrationIndustrial OT cyber defense

Deployment

Cloud

Integrations

Microsoft Sentinel, AWS Security Hub, Google Cloud +2

Target Users

Financial Services, Automotive, Energy, Healthcare, Manufacturing, Retail

Enterprise Ready:Compliance: ISO 27001; SOC 2; NIS 2; DORA; GDPR; PCI-DSS; HIPAA

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Cyber Risk Management

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Archer IT & Security Risk Management

byArcherVerified

Overland Park, Kansas, USA1,001-5,000

Free trial available. Archer IT & Security Risk Management by Archer offers threat modeling. Compare features, use cases and leading GRC alternatives.

IT asset catalogVulnerability risk scoringCyber risk assessments

Deployment

SaaS, Cloud, On-Premise

Integrations

Qualys, Rapid7, Tenable +2

Target Users

Cross-industry, Financial Services, Healthcare, High-Tech

Enterprise Ready:SSO ReadyRBACREST APICompliance: NIST CSF; ISO 27001; CIS Controls; PCI DSS

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Cybersecurity Consulting

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Deloitte Cyber & Product Security

byDeloitteVerified

London, United Kingdom450,000+

Deloitte Cyber & Product Security: threat modeling and SecDL governance. Built for product security engineering. Compare Cybersecurity Consulting alternatives.

Product security engineeringFirmware penetration testingIoT threat modeling & SecDL

Deployment

Cloud

Integrations

Client CI/CD Toolchains, Hardware Testing Labs, SIEM

Target Users

Aerospace, Automotive, Medical Devices, Industrial, Banking

Enterprise Ready:Compliance: ISO/SAE 21434; FDA Cybersecurity; EU CRA; ISO 27001

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#10

Cyber Risk Management

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Optiv Cyber Risk Services

byOptivVerified

Denver, Colorado, USA2,000+

Optiv Cyber Risk Services: enterprise GRC strategy, third-party risk management and compliance gap assessments. Built for Security Assessment. Compare GRC alternatives.

Cyber Risk ManagementGRCSecurity AssessmentBoard Advisory

Deployment

Cloud

Integrations

NIST CSF, ISO 27001, FAIR model

Target Users

Global Enterprises, Banking, Energy, Large Enterprise

Enterprise Ready:Compliance: NIST CSF; ISO 27001; SEC Disclosure; DORA; SOC 2

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#11

Cybersecurity Consulting

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IBM Security Architecture Services

byIBMVerified

Armonk, New York, USA250,000+

IBM Security Architecture Services: cybersecurity consulting and security architecture. Built for security architecture. Compare Cybersecurity Consulting alternatives.

Security architectureTransformationControl design

Deployment

Cloud

Integrations

Hybrid cloud, on-premises, cloud

Target Users

Enterprise, Government, Financial Services, Healthcare, Technology

Enterprise Ready:SSO ReadyREST APICompliance: Engagement-specific

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#12

Compliance Management

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Coalfire FedRAMP Services

byCoalfireVerified

Westminster, Colorado, USA1,001-5,000

Evaluating Coalfire FedRAMP Services? See how this Compliance Management tool handles boundary scoping, where it fits best and which alternatives to compare.

Compliance ManagementGRCCloud Security

Deployment

Cloud

Integrations

AWS GovCloud, Azure Government, NIST SP 800-53

Target Users

Cloud Service Providers, Defense, SaaS

Enterprise Ready:REST APICompliance: FedRAMP (High, Moderate, LiSaaS); DoD IL

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#13

Cybersecurity Consulting

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NCC Group Security Architecture

byNCC GroupVerified

Manchester, United Kingdom2,000+

Evaluating NCC Group Security Architecture? See how this Cybersecurity Consulting tool handles zero trust design, where it fits best and which alternatives to compare.

Security ArchitectureStrategy Consulting

Deployment

Cloud

Integrations

NIST, ISO 27001, CIS Controls +1

Target Users

Cross-industry, Enterprise Leadership, Public Sector

Enterprise Ready:REST APICompliance: TOGAF; SABSA; ISO 27001; NIST

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Frequently Asked Questions

Quick answers about Top Cybersecurity Consulting Firms.

Which are the top Cybersecurity Consulting vendors on Cyber Rank?

Top Cybersecurity Consulting Firms currently lists 13 products, in editorial order: #1 Accenture Cybersecurity Services, #2 Diligent One Platform, #3 ServiceNow Integrated Risk Management, #4 EY Cybersecurity, #5 PwC Cybersecurity & Privacy, #6 Booz Allen Cyber Engineering (Booz Allen Hamilton), #7 Capgemini Cybersecurity Services, #8 Archer IT & Security Risk Management, #9 Deloitte Cyber & Product Security, #10 Optiv Cyber Risk Services, #11 IBM Security Architecture Services, #12 Coalfire FedRAMP Services, #13 NCC Group Security Architecture.

Which product is ranked #1 in Top Cybersecurity Consulting Firms?

Accenture Cybersecurity Services by Accenture is ranked first by the Cyber Rank editorial team.

View Accenture Cybersecurity Services →

How is Top Cybersecurity Consulting Firms put together?

The Cyber Rank editorial team selects the products on this list and decides their order after reviewing each product's features, deployment options, integrations, industry fit and vendor background. It is not a market-share or customer-review ranking.

Which products appear here?

Products that our editors picked for Cybersecurity Consulting and that have a published Cyber Rank profile.

Can a product appear in other rankings?

Yes. Editors can list a product in any ranking where it is a strong fit, so it may appear in several.