Lawrie Brown & William Stallings 
Computer Security: Principles and Practice, Global Edition [EPUB ebook] 

Computer Security, 5th Edition features a balanced presentation of both principles and practice. It incorporates broad and comprehensive coverage of computer and network security with current developments and topics in the field. Principles, design approaches, standards, and real-world examples give you an understanding of both the theory and application of important concepts. Hands-on security education, research, programming and firewall projects give you practice applying the material. Hacking and lab exercises, real-world case studies, and security assessments further your understanding of text concepts.