Sijmen Ruwhof

I'm Sijmen Ruwhof and an independent IT security researcher and weblogger from The Netherlands. In my professional life I'm a freelance IT security consultant and ethical hacker (white hat). I've been hacking computers for the last 24 years (with permission of the owners). Every now and then journalists ask my opinion on news events and sometimes my security research is featured on Tv and radio shows. 

This channel is created to host the videos that I discuss on my personal weblog about IT security, privacy and hacking.