Founder and Managing Director, TRMG

Mark Johnson came to the online investigations and cyber-enabled crime arena following a career in drug enforcement and telecoms fraud control.

Mark is constantly in demand as a speaker and trainer who explains the complex topic of cybercrime in an accessible and jargon-free style, using a combination of appropriate humour and practical demonstrations. He has worked globally over a period of decades and across a very wide range of cultures.

A Security Cleared information security manager, an internet investigator and a high-tech fraud manager with over two decade’s experience of the communications and data industry, Mark is a civilian Associate with the City of London Police Economic Crime Academy and a consultant working in support of the National Police Chief’s Council.



Internet Investigations & Training Lead

Esti Medynska is a highly skilled and experienced Security Cleared internet investigator and trainer. She has a deep understanding of the fast-changing technologies and digital investigative tools that characterise this field. In addition to conducting online investigations and reputational harm audits, she delivers open source investigations training to UK police forces and the private sector.

Esti is a graduate of Manchester University with a Gold Student Success Award from an MA in Terrorism and Security. She completed her open source training with Toddington International, as well as ISO27001 Certified ISMS Foundation (CIS F) Cyber Essentials Foundation Training and web design courses.