Dionach

Dionach, now part of the Nomios Group, is a CREST-approved global information security consultancy with over 25 years of experience in cybersecurity services. The company specializes in comprehensive security assurance through penetration testing, adversary simulation, and social engineering assessments, while also providing compliance services for standards including PCI DSS, ISO 27001, ISO 42001, and emerging regulations such as NIS2, DORA, and the EU AI Act. With a team of over 50 highly qualified consultants, Dionach has conducted more than 2,000 penetration tests annually and serves over 350 public and private sector clients worldwide. The consultancy offers an enterprise-wide perspective on cybersecurity, helping organizations protect their digital assets, ensure regulatory compliance, and respond effectively to security incidents. Dionach has developed particular expertise in healthcare cybersecurity, having worked with NHS Digital to develop cybersecurity programmes and improve the security posture of NHS Trusts. Their service portfolio spans multiple industry sectors including aviation, defence and aerospace, finance, government, energy and utilities, oil and gas, retail, and technology. As part of the Nomios ecosystem, Dionach now offers an expanded suite of services including SOC and NOC capabilities alongside their established security assurance offerings. The company maintains globally recognized certifications including PCI QSA status and ISO 27001, demonstrating their commitment to maintaining the highest standards in information security consulting.