Rop Gonggrijp Rop Gonggrijp founded ITSX in 1998. He began hacking in his teens and founded the magazine Hack-Tic in 1989. In 1993, he was a co-founder of the Netherlands' first public Internet provider (xs4all.nl). He also played a role in the founding of De Digitale Stad, Amsterdam's Digital City. He is well known in the Netherlands and abroad as an expert in computer and telecommunications security. He has regularly been an expert witness for court cases, and is a guest lecturer on the Information Revolution and its political impact.