Karl Greenfield

Head of Cyber Security


Heading up the Cyber Security Team, Karl joined CNS in early 2016 bringing over 20 years’ experience of network security with him. Having worked within many sectors including government, energy & utilities and banking, Karl has applied his ‘in demand’ skills internationally before returning to his motherland.

Karl is a CESG Certified Professional and under his guidance CNS’ Cyber Security Team has achieved huge success, certifying a large percentage of the UK’s Cyber Essentials and Cyber Essentials Plus marketplace, and becoming one of the largest and most experienced certification bodies within the UK. Having designed CNS’ Cyber Awareness Training package and overseeing a bespoke phishing service which his team has developed, Karl has assisted CNS in staying ahead of the curve and becoming recognised as Cyber Security Experts.

Outside of the office, Karl enjoys spending time with his wife and dogs. He makes a mean homebrew and relishes tending his woodland in West Wales.