Rejah Rehim is currently a security architect with FAYA India and is a long-time preacher of open source. He is a steady contributor to the Mozilla Foundation, and his name has been featured on the San Francisco Monument made by the Mozilla Foundation.

He is a part of the Mozilla add-on review board and has contributed to the development of several node modules. He has to his credit the creation of eight Mozilla add-ons, including the highly successful Clear Console add-on, which was selected as one of the best Mozilla add-ons of 2013. With a user base of more than 44,000, it has registered more than 6,90,000 downloads to date. He has successfully created the world's first, one-of-a-kind security testing browser bundle, PenQ, an open source Linux-based penetration testing browser bundle preconfigured with tools for spidering, advanced web searching, fingerprinting, and so on.

Rejah is also an active member of OWASP and is the chapter leader of OWASP Kerala. He is also an active speaker at FAYA:80, one of the premier monthly tech rendezvous in Technopark, Kerala. Besides being a part of the cyber security division of FAYA currently and QBurst in the past, Rejah is also a fan of process automation and has implemented it in FAYA. In addition to these, Rejah also volunteers with Cyberdome, an initiative of the Kerala police department, as Deputy Commander.

I am thankful to God the Almighty for helping me complete this book. I wish to express my deep and sincere gratitude to my parents and my wife, Ameena Rahamath, for their moral support and prayers in every phase of my life and growth.

I also express my deep gratitude to my friends and family for their constant help in both personal and professional spheres. I am truly blessed to be working with the smartest and most dedicated people in the world at FAYA. This humble endeavor has been successful with the constant support and motivation of my colleagues, notably Deepu S. Nath and Arunima S. Kumar. I would like to specially thank Onkar Wani (content development editor at Packt Publishing) for supporting me during the course of completing this book.