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Dionach by Nomios has over 25 years of expertise in information security, supporting organisations in building resilience against ever‑evolving cyber threats. Certified to ISO 27001, PCI QSA, CESG CHECK, and CREST standards, we provide trusted services across Penetration Testing, Red Team Assessments, PCI DSS and ISO 27001 Auditing & Consultancy, Incident Response, and AI Governance. Our dedicated Research & Development team continually investigates emerging risks, working closely with leading vendors and clients to share insights and strengthen defences. We believe effective cyber risk management requires more than technical controls. It demands a robust Information Security Management System, reinforced by regular, high‑quality security testing and forward‑looking governance frameworks. With the addition of our AI Governance service, we help organisations adopt AI responsibly, ensuring compliance, transparency, and ethical risk management as part of a holistic security strategy.

Website https://www.dionach.com
Revenue $13.4 million
Employees 83 (56 on RocketReach)
Founded 1999
Phone +44 1865 877830
Technologies
Industry IT Services and IT Consulting, Business Services General, Information Technology, Application and Infrastructure Penetration Testing, Business Services, IT Security Audits, ISO 27001 Audits and Consultancy, PCI DSS, Gambling Commission Security Audits, Cyber Security Incident Response, Forensic Investigations
Web Rank 2 Million
Keywords Information Security, It Security, Cybersecurity, Penetration Testing, Cybersecurity Consulting, Security Consultancy, Security Testing, Security Services, Ethical Hacking, Data Security, Pci Dss Compliance, Vulnerability Assessment, Risk Assessment, Security Architecture, Compliance Consulting, Incident Response, Iso 27001 Certification
Competitors Broadcom, Palo Alto Networks, CrowdStrike, Check Point Software Technologies Ltd, Mandiant, Kaspersky, Cybereason, Mandiant (now part of Google Cloud), Armor Defense, DivvyCloud +45 more (view full list)
SIC SIC Code 73 Companies, SIC Code 737 Companies
NAICS NAICS Code 54 Companies, NAICS Code 541 Companies, NAICS Code 5415 Companies, NAICS Code 541512 Companies, NAICS Code 54151 Companies

Dionach Questions

The Dionach annual revenue was $13.4 million in 2026.

Bil Bragg is the CTO of Dionach.

56 people are employed at Dionach.

The NAICS codes for Dionach are [54, 541, 5415, 541512, 54151].

The SIC codes for Dionach are [73, 737].

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