Charl van der Walt is the original founder of SensePost, a pen testing company in SA and in the UK, where he still sits on the board. He has acted in various roles there, including CEO for about five years. After SensePost was sold to SecureData, he took a diverse role within the group that includes leading its research unit, directing security strategy and leading the "Security Intelligence Unit", which (among other things) runs a significant managed SIEM and threat hunting (MDR) operation. Van der Walt has spoken on a variety of occasions over the duration of his career, including at Black Hat, HITB, Defcon, NATA CCDCOE, BSides and 44Con.