As we mark our 25th anniversary, Dionach by Nomios continues to lead the way in providing advanced cybersecurity solutions that empower businesses to defend against evolving digital threats. With decades of experience in penetration testing, compliance, and red teaming, we ensure that our clients are equipped to secure their digital environments effectively. Watch our new branding video to discover how we continue to help businesses secure their operations with our trusted cybersecurity solutions. Thank you to all our clients and employees who have supported us throughout this incredible journey. Here’s to the next 25 years of securing your digital future. #CyberSecurity #PenetrationTesting #RedTeam #Compliance #DionachbyNomios
About us
Dionach by Nomios is an independent information security consultancy with over 25 years of experience. We are ISO 27001, PCI QSA, CESG CHECK, and CREST certified, delivering trusted expertise across a range of security disciplines, including Penetration Testing, Red Team Assessments, PCI DSS and ISO 27001 Auditing and Consultancy, and Incident Response. With new cyber threats and vulnerabilities emerging every day, our dedicated Research and Development team ensures we stay ahead—actively researching both known and emerging risks. We collaborate with major vendors and our clients to share key discoveries and strengthen defences. At Dionach by Nomios, we believe that the best way to manage evolving cyber risks is through a robust Information Security Management System, supported by regular, high-quality security testing as a core part of any strong security strategy.
- Website
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https://xmrrwallet.com/cmx.pwww.dionach.com
External link for Dionach by Nomios
- Industry
- IT Services and IT Consulting
- Company size
- 51-200 employees
- Headquarters
- Oxford
- Type
- Privately Held
- Founded
- 1999
- Specialties
- Application and Infrastructure Penetration Testing, IT Security Audits, ISO 27001 Audits and Consultancy, PCI DSS, Gambling Commission Security Audits, Cyber Security Incident Response, Forensic Investigations, Virtual CISO, Cloud Security Assessment, and Red Team Assessment
Locations
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Primary
Unipart House
Garsington
Oxford, OX4 2PG, GB
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Hope Street
4th Floor 94
Glasgow, Scotland G2 6PH, GB
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4235 Hillsboro Pike
Nashville, Tennessee 37215, US
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Stadhouderslaan 900
Zoeterwoude, South Holland 2382 BL, NL
Employees at Dionach by Nomios
Updates
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Think your defences are strong? So did many organisations until they faced a real attack. Traditional penetration tests are essential, but they often follow a known playbook. Adversary Simulation takes it a step further. We simulate real-world attacks tailored to your environment mirroring tactics used by sophisticated threat actors. From phishing entry points to lateral movement and privilege escalation, we test how your people, processes, and technology respond under pressure. 💡 What you gain: • Insight into how an attacker would exploit weaknesses • A realistic view of your detection and response capabilities • A clear roadmap to strengthen your security posture 🛡️ Want to go beyond checklists and build true resilience? Learn more: https://xmrrwallet.com/cmx.pbit.ly/471zKyh #RedTeam #AdversarySimulation #PenetrationTesting #CyberSecurityTesting #DionachbyNomios
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AI is changing the game but it’s also changing the risks. If your organisation is adopting or developing AI tools, it’s crucial to think about security, governance, and compliance from day one. At Dionach, we help you: ✅ Understand and manage AI-related risks ✅ Build a governance framework that actually works ✅ Test your models for vulnerabilities ✅ Prepare for AI-specific security incidents Whether you’re using AI in-house or relying on third-party tools, our team can support you with practical guidance and technical insight. 🧠 Learn more about our AI cyber security services: 👉 https://xmrrwallet.com/cmx.pbit.ly/46WEzZH #CyberSecurity #AI #AIGovernance #AISecurity #RiskManagement #DionachbyNomios
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💛 Support Dougie’s 1,000-Mile Ride for Brain Tumour Research 💛 Our colleague Dougie Fisher was diagnosed with a brain tumour in 2020. After enduring surgery, chemo, and radiotherapy, he’s now raising awareness and funds for Brain Tumour Research - a cause close to his heart. To support the fight for better treatments, he’s cycling 1,000 miles from Land’s End to John O’Groats. He started on 18 July and aims to finish on 2 August, currently making his way through the UK! 🚴♂️ Donate here if you can: 🔗 https://xmrrwallet.com/cmx.plnkd.in/dYB_rjXQ 📲 Follow his journey on Instagram: @lifecycleofafisher Even a share makes a difference. Let’s cheer him on! 💪 #BrainTumourResearch #LEJOG #CyclingForACure #SupportDougie
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🎉 Welcome to the team, Altay Ordukaya! We’re excited to have Altay join Dionach as a Junior Cyber Security Consultant! With HTB CPTS certification, and experience as a HackerOne researcher, Altay brings a real passion for ethical hacking and vulnerability research. He’ll be supporting our security testing and threat assessments. Great to have you on board, Altay! 👏 #DionachbyNomios #Nomios #CyberSecurityCareers
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We're #hiring a new Client Relationship Coordinator in Glasgow, Scotland. Apply today or share this post with your network.
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We’re excited to be part of the Leeds Cyber Security Conference as a sponsor and exhibitor! Come meet the Dionach by Nomios team on 16th October at The Northern Ballet, Leeds. We’ll be ready to chat all things cyber security! #CyberSecurity #InformationSecurity #LCSC2025 #CyberEvents
🎉 Sponsor Spotlight We’re pleased to welcome Dionach by Nomios as both a sponsor and exhibitor at this year’s Leeds Cyber Security Conference! With a strong track record in cyber security consultancy, Dionach brings deep technical insight, and they’ll be on-site to share knowledge, answer questions, and connect with the community. Come meet the team on Thursday 16th October at The Northern Ballet, Leeds. 🎟️Tickets available now, link in the comments #LCSC2025 #CyberSecurity #CyberEvents #InformationSecurity
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We're #hiring a new Cyber Security Consultant in Oxfordshire, England. Apply today or share this post with your network.
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We're #hiring a new CHECK Team leader in Oxfordshire, England. Apply today or share this post with your network.
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AI is transforming businesses but not always in ways you can see. In our latest blog, we explore Shadow AI: the unapproved and unmonitored use of AI tools within organisations. From data leakage to compliance violations, the risks are real. 🔍 Learn how to uncover Shadow AI in your digital ecosystem and what steps you can take to protect your business. 👉 Read more: https://xmrrwallet.com/cmx.pbit.ly/44wU8of #CyberSecurity #AI #ShadowAI #RiskManagement #DataSecurity #DionachbyNomios #InfoSec #DigitalTrust