(Content introduction: "New Hacker Attack and Defense From Beginner to Mastery" is divided into 13 chapters, introducing system security and common commands, registry security, group policy, local security policy and computer management, clearing system, network and software records, hacking Common tool analysis, network account and password attack and defense, common Trojan horse attack and defense, malicious code attack and defense, U disk virus attack and defense, network system vulnerability attack and defense, encryption technology, password and data recovery and antivirus software and firewall use etc. "New Hacker Attack and Defense From Beginner to Mastery" is a well-developed professional-level multimedia education CD. It uses engineering voice commentary, love mode education, detailed picture and text comparison and real situation demonstration. The content provides an in-depth explanation of each common sense point, and guides readers step by step to realize various uses of hacker attack and protection.)