The Origin
Built from experience, not theory.
Obisec was born from frustration with the gap between what the cybersecurity industry promises and what it actually delivers. After working across every sector and discipline in IT and cybersecurity since 1986, founder Dimitrios Zacharopoulos saw the same patterns repeated, reactive security, misaligned teams, and consultants who had never done the work themselves. In 2001, he founded Obisec under Obipixel Ltd to do things differently. By 2007, the decision to leave the permanent job market was final. There was no looking back.
The Approach
Agile, direct, and built on trust.
We are not a large consultancy with layers of middle management. Obisec is lean by design. We respond fast, work directly with decision makers, and deliver results, not decks. When larger projects demand additional expertise, we collaborate with trusted peers who share our competencies and ethical standards. Every engagement is tailored. Every report is actionable. We have built a reputation by doing the work, not marketing around it.
The Track Record
Numbers that speak for themselves.
Over 2,000 penetration tests across networks, web applications, mobile platforms, and wireless infrastructure. More than 200 digital forensics cases spanning incident response, data breach investigations, malware analysis, and expert witness testimony in both the UK and The Hague, Netherlands. Countless consulting projects across finance, healthcare, government, defence, education, telecoms, retail, and critical infrastructure, with clients across Wales, England, Scotland, Ireland, the EU, Africa, and the United States.
The Mission
Put the right people in the right roles.
One of the most consistent findings across decades of consulting is how many organisations have the wrong people in the wrong jobs and talented individuals who could transform their security posture are overlooked entirely. Obisec doesn't just test your systems. We assess your teams, your processes, and your people. Then we build the plan to fix what's broken — across cybersecurity, AI, blockchain, and development teams. That's what makes this more than a penetration testing company.