My name is Zaid Al-Quraishi, I am an ethical hacker, a computer scientist, and the founder and CTO of zSecurity. I just love hacking and breaking the rules, but don’t get me wrong as I said I am an ethical hacker. I studied computer science in University College Dublin, I graduated in may 2016. I have a very good experience in ethical hacking, I started making video tutorials back in 2009 in an ethical hacking community (iSecuri1ty.org), I also worked as a pentester for the same company. In 2013 I started teaching my first course online in Arabic, this course received amazing feedback which motivated me to create an English version of this course. The english course became the most popular and the top paid course in Udemy for almost a year, this motivated me to make more courses on ethical hacking, now I have a number of courses on ethical hacking and more than 200,000 students on Udemy and other teaching platforms such as StackSocial, StackSkills and zSecurity.