Dionach
Global enterprise cybersecurity consultancy founded in 1999 in Oxford, holding rare CREST STAR-FS accreditation and delivering penetration testing, red and purple teaming, and PCI QSA services across five international offices.
About
Dionach is an enterprise-focused cybersecurity consultancy founded in 1999 and headquartered in Oxford, United Kingdom, with over 25 years of experience delivering expert security services around the world. The firm employs over 50 cybersecurity professionals across offices in Oxford, Manchester, Glasgow, New York, and Tokyo. Dionach was acquired by Nomios Group in 2024. The company holds CREST, CHECK, CREST STAR-FS, ISO 27001, ISO 9001, and PCI QSA accreditations.
Dionach's CREST STAR-FS accreditation places them among only seventeen companies in the United Kingdom to hold this distinguished status, specifically designed to meet the stringent demands of the financial services sector. Their service portfolio encompasses network and web application penetration testing, red team and purple team engagements, SCADA and OT testing, incident response, vulnerability research, and governance risk and compliance services.
Dionach's consultants hold qualifications including CREST, PCI QSA, ISO 27001 Lead Auditor, CISA, CISSP, and Certified Incident Handler certifications. The firm serves clients across finance, aviation, energy, healthcare, retail, technology, and government sectors.
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