This book is really a first step for the persons who are really intereseted in learning and know more and more about ethical hacking. here i described the tools and penetration testing methodologies used by ethical hackers this book offers you yo learn how hackers targets systems and exploit in windows and linox systems through experts method. As well as it teaches you the techniques of mobile and wireless hacking and how you can secure your system through hackers. we are providing you step by step method for forensic malware analyse amd viruses.