دانلود کتاب هک اخلاقی عملی و دفاع شبکه

The need for security professionals who understand how attackers compromise networks is growing each day. You can’t read the news without seeing an article on ransomware or personal information being stolen from unprotected databases. Since the first edition of Hands-On Ethical Hacking and Network Defense was published, the United States has created an organization with the sole purpose of countering cyber threats and attacks. Both public and private companies rely on skilled professionals to conduct test attacks on their networks as a way to discover vulnerabilities before attackers do. “Ethical hacker” is one term used to describe these professionals; others are “security tester” or “penetration tester.” This course isn’t intended to provide comprehensive training in security testing or penetration testing. It does, however, introduce security testing to those who are new to the field. This course is intended for novices who have a thorough grounding in computer and networking basics but want to learn how to protect networks by using an attacker’s knowledge to compromise network security. By understanding what tools and methods a hacker uses to break into a network, security testers can protect systems from these attacks. The purpose of this course is to guide you toward becoming a skilled security tester. This profession requires creativity and critical thinking, which are sometimes difficult skills to learn in an academic environment. However, with an open mind and a willingness to learn, you can think outside the box and learn to ask more questions than this course or your instructor poses. Being able to dig past the surface to solve a problem takes patience and the willingness to admit that sometimes there’s no simple answer. Conducting a security test involves more than running exploits against a system and informing your client of existing vulnerabilities. Isn’t it possible that you neglected to test for some areas that might be vulnerable to attacks? Haphazard approaches undermine the security profession and expose companies to theft. The goal of this course is to offer a more structured approach to conducting a security test and to introduce novices to professional certifications available in this growing field.