Welcome to the 2023 edition of the Hacker's Manual! You hold in your hands 148 pages of Linux hacking tutorials, guides and features from the experts at Linux Format magazine - the home of open source software. In this edition we've gone in hard for security. You'll find guides to securing servers, getting a grounding in hacking, using security tools such as Kali and Fedora Security Lab, alongside solid features explaining how to protect your privacy online using established tools like Tails. But we shouldn't live in fear! Hacking is monumental fun. Never mind setting up and playing with Linux, we take a look at hacking tablets, media servers, virtual machines, cloud servers, multi-booting with Grub and much more. If you're a little timid when it comes to the Terminal we even have a meaty reference section at the back. So dive in and enjoy!