A collection of selected articles from Hacker magazine describes the technology of injecting shellcode into KeePass memory with bypassing antiviruses, the ShadowCoerce attack on Active Directory, the problems of heap allocation and the exploitation of the heap of a vulnerable SOAP server on Linux. It tells about ways to crack the protectors of Themida, Obsidium, .NET Reactor, Java applications with dirtyJOE power, fat binary programs for macOS with support for several architectures. Examples of bypassing Raw Security and writing a DDoS utility for Windows, hacking a computer game and writing a C++ trainer for it are given. Techniques for testing the OSPF and EIGRP dynamic routing protocols and the DTP protocol are described. The vulnerability is described in detail Log4Shell and examples of its exploitation are given.