As developers, we build great things. The next step is to protect this work and our precious data, sometimes the crown jewels of the company. This extensive presentation is an introduction into information security, with many tips and thoughts for developers. It focuses on the benefits of applying information security, and how to use it in your work. Michael Boelen has a background in Linux security. He is the developer of several open source tools. This presentation includes some tips specifically for Linux, although most principles are applicable on all platforms.