Best Consultants for Large Enterprises

Arrow Cyber Advisors

Arrow Cyber Advisors enables organizations to build measurable cybersecurity maturity and resilience. We specialize in governance, risk and compliance advisory, providing clear security direction, maturity benchmarking, and execution support tailored to regulated and high-risk environments.

Circl3.tech

Circl3.tech is a Cyprus-based cybersecurity advisory firm specialising in vCISO services, information security governance, risk management, and regulatory compliance. Founded by Panos Panayiotou — an ISO/IEC 27001 Lead Implementer (Senior) and seasoned CISO with over 25 years of experience across banking and government sectors — Circl3.tech supports public and private sector organisations in designing and implementing cybersecurity frameworks, ISMS control environments, and strategic security programmes aligned with ISO/IEC 27001 and NIS requirements.

Cloud360 Technologies

Building an AI-native GRC platform that replaces manual, outdated governance processes with agentic frameworks designed for organizations enabling AI. Cloud360 delivers real-time security posture, AI-generated cyber risk profiles, continuous attack surface discovery, and AI pen testing — all built on the principle that compliance does not equal secure. Core focus areas: → AI governance frameworks for mid-market companies enabling AI across their engineering organizations → Continuous compliance monitoring for SOC 2, ISO 27001, and EU AI Act → Shadow AI detection and observability — if you can't see it, you can't secure it → Agentic GRC workflows that replace analyst headcount with purpose-built AI agents

Corelink

ISO/IEC 27001 internal audit, ISMS readiness, and ISMS documentation services to support certification and continual improvement.

FEHA

FEHA is an AI and Human powered platform supporting businesses to comply with various frameworks and regulations, and prepare for certification, seamlessly.

Genius GRC

We offer cybersecurity and compliance consulting that focuses on delivering high quality service at a reasonable price. ISO 27001, SOC 2, ISO 42001, GDPR

GRCC Jahn

Governance, Risk & Compliance consulting by Viktor Jahn. One point of contact from start to finish. Audits, advisory, and training across NIS2, BISG, TISAX, DORA, GDPR, and ISO 27001. Pragmatic, hands-on and built for practice.

Gritera

Gritera specializes in information security management services, including advisory for ISO 27001 implementation and risk management.

Hollanders Consultancy

Hollanders Consultancy helps organizations strengthen information security and IT governance through pragmatic advisory, architecture, and compliance support, including ISO 27001, NIS2, risk management, and secure cloud solutions.

i.s.c. Group

ISMS implementations, OneCompliance(tm) program to implement multiple standards at once.

ISO 27001:2002 Audit prep

ISO 27k and Cyber GRC suite of offerings encompassing NIS2 and other frameworks

ISO Serious

Pragmatic ISO 27001 implementation and maintenance for startups.

ISO27001 Implementation

At GRC Hub, we help businesses strengthen their governance, risk, and compliance frameworks through a blend of expert consultancy and smart automation. Our approach reduces unnecessary manual effort, enabling teams to focus on what matters most. Our ISO27001 services include: Statement of Applicability and Scope Identification Gap Analysis and Implementation Support Mock Audits and Readiness Assessments Guidance throughout Stage 1 and Stage 2 Certification Audits We combine deep industry expertise with technology-driven solutions to deliver efficiency, clarity, and confidence in compliance.

Nexus Advisory

ISO 27001 Consulting, auditing, gap analysis

PROCESS 360

At PROCESS 360, we build systems using innovative, effective processes to deliver successful outcomes. The company specializes in a range of ISO management systems, providing our clients with audit, consulting, and training services.

Reisender

Reisender helps your organization stay protected while driving performance and growth by assessing risks, implementing ISMS requirements, identifying opportunities, and implementing tailored solutions aligned with business goals.

SolidInfoSec

Information security consulting focused on strengthening governance, risk and compliance practices. We help organizations structure and implement practical security processes, support audit readiness and build sustainable frameworks that remain workable over time.

SOTENAC IT RISK

Expert IT Risk & GRC (ex-BNP Paribas), j'aide les DSI/RSSI à sortir de la conformité "papier". Mon focus : la sécurité opérationnelle et la priorisation des risques réels. Accompagnement flexible ou missions "One Shot" pour transformer la GRC en levier de pilotage simple.

SrivelEnterprise

A seasoned professional with 17+ years of fruitful experience with expertise in ISO Certification, SSAE18 (SOC1 and SOC2), GDPR, Quality Management System (ISO 9001), Information Security Management System (ISO 27001), Information Technology Service Management System (ISO 20001), Asset Management System (ISO 55001), HIPAA, Certified Data Protection Officer, Business Continuity, VAPT, Risk Management, Secure Coding, Data Privacy, Processing Integrity, E-learning, Training and Mentoring, Design Thinking, Operations, Strategy, People Management, Technocommercial Acumen. Management Systems: Effectively implemented, maintained, audited ISO 9001 (QMS), ISO 27001 (ISMS), ISO 23001 (BCMS), ISO 20001 (ITSM), ISO 27701 (PMS), ISO 42301 (AIMS), CMMI, SSAE18 (SOC1, SOC2), HIPAA, HITRUST, HITECH, CCPA, GDPR, FedRAMP standards in various organizations across industries. Strong understanding of business best practices w.r.t. quality, information security, continuous process improvements.

StackAware

StackAware specializes in managing cybersecurity, privacy, and compliance risks associated with AI.

The Rybec Group

The Rybec Group: Practical, People‑Focused Cyber Security The Rybec Group is a cyber security partner built by former law‑enforcement investigators. We help organisations with limited time or resources achieve IASME Cyber Essentials, ISO 27001, and long‑term compliance with confidence. Our approach is simple: clear guidance, measurable outcomes, and people‑centred support. No jargon. No complexity. Just practical cyber resilience that helps you build trust, meet client demands, and protect your future. What We Deliver Governance, Risk & Compliance Expert support across ISO 27001, ISO 42001, CAF, NIST, and the Cyber Resilience Act — including full implementation, documentation, and ongoing ISMS management. Compliance‑as‑a‑Service A fully managed service that keeps your organisation compliant year‑round. We handle internal audits, ISMS maintenance, evidence collection, policy updates, and continuous improvement so you stay audit‑ready at all times. Cyber Security Assessments Clear identification of vulnerabilities with tailored, actionable recommendations. Cyber Awareness Training NCSC‑aligned training that empowers your people to recognise and respond to threats. IASME Cyber Essentials & Cyber Assurance Certification and consultancy to help you achieve and maintain compliance with ease. Audit Readiness Support Hands‑on preparation for external audits, ensuring your evidence, processes, and documentation meet the required standards. Flexible Payment Plans Accessible support for organisations of all sizes, with payment options that fit your budget and project timelines. Trusted experts. Real‑world experience. Unbeatable support. Secure your organisation with The Rybec Group. contact@rybec.co.uk 01482 765251

The Rybec Group

The Rybec Group: Practical, People‑Focused Cyber Security The Rybec Group is a cyber security partner built by former law‑enforcement investigators. We help organisations with limited time or resources achieve IASME Cyber Essentials, ISO 27001, and long‑term compliance with confidence. Our approach is simple: clear guidance, measurable outcomes, and people‑centred support. No jargon. No complexity. Just practical cyber resilience that helps you build trust, meet client demands, and protect your future. What We Deliver Governance, Risk & Compliance Expert support across ISO 27001, ISO 42001, CAF, NIST, and the Cyber Resilience Act — including full implementation, documentation, and ongoing ISMS management. Compliance‑as‑a‑Service A fully managed service that keeps your organisation compliant year‑round. We handle internal audits, ISMS maintenance, evidence collection, policy updates, and continuous improvement so you stay audit‑ready at all times. Cyber Security Assessments Clear identification of vulnerabilities with tailored, actionable recommendations. Cyber Awareness Training NCSC‑aligned training that empowers your people to recognise and respond to threats. IASME Cyber Essentials & Cyber Assurance Certification and consultancy to help you achieve and maintain compliance with ease. Audit Readiness Support Hands‑on preparation for external audits, ensuring your evidence, processes, and documentation meet the required standards. Flexible Payment Plans Accessible support for organisations of all sizes, with payment options that fit your budget and project timelines. Trusted experts. Real‑world experience. Unbeatable support. Secure your organisation with The Rybec Group. contact@rybec.co.uk 01482 765251

vCISO

Virtual CISO is a service that provides Cyber- and information security advisory to danish companies in need of an experienced advisor with more than 20 years of experience in areas covering private enterprise, government, defense and academia.

Visionary Point

Modern GRC consulting services for based in New York and Paris.