Colin Robbins is a Principal Security Consultant based in Nottingham with decades-long expertise in secure communications, specialising in high-assurance environments, cross-domain data-centric security and resilient information exchange for denied, degraded and intermittent networks. He served as Nexor’s CTO and long-time CISO, led the consultancy Qonex, and has audited PKI and trust services across defence, public sector and commercial clients against ISO 27001, eIDAS and CA/Browser standards. Colin combines deep technical roots—authoring the early QUIPU X.500/LDAP work at UCL that later commercialised widely—with practical delivery of smart-card, identity and HSM solutions in large-scale projects. He advises boards on cyber strategy and supply-chain security, while maintaining hands-on research into applying data-centric techniques to real-world constrained networks. A retired cyber professional who still contributes through consultancy and home automation projects, he brings rare continuity from early internet directory engineering to modern assurance and accreditation practice.
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Colin Robbins - Principal Security Consultant at Nexor