These are open educational resources (OER) for IT professionals who want to get a better grasp of cybersecurity. They are to be used by teachers, trainers, students and hobbyists who have an IT / CS (Computer Science) background.

Content is located in the content/ folder. It consists of 10 chapters:

• Security Principles and Terminology
• Account Management and Password
• Access Control, Privileges, Isolation
• Data Protection
• Runtime Application Security
• Web Application Security
• Network Monitoring and Defense
• Penetration Testing
• Security Audit
• Intrusion Detection and Intrusion Prevention

Each chapter has its own folder. Content for each chapter is split in two subfolders:

• lecture/: content to be presented and discussed as part of lectures / presentations
• practice/: content to be worked on as practical activities

Lecture content is expected to be presented and followed. Practice content is expected to be used hands-on individually or as part of team.

Lecture content consists of slides, demos, media files and quizzes in the lecture/ subfolder of each chapter.

Slides are written in GitHub Markdown and use reveal-md and reveal.js to render HTML output. Building slides requires MarkdownPP. Lecture slides are built from the slides.mdpp file using the make command (and the Makefile). slides.mdpp is a wrapper / index file; actual content is stored in Markdown format in files in the slides/ subfolder. Output is generated in the _site/ subfolder; open the _site/index.html in a browser to view the slides.

Demos are snippets of code and support files that showcase concepts and ideas related to the lecture. Demos are located in the demo/ subfolder. Each demo has its own folder with source code, Makefile or other build files (if required) and support files.

Media files are images and films used in slides for visual support. Media files are located in the media/ subfolder.

Quizzes are used in slides to trigger interactivity with participants and as a form of (self-)assessment. Quizzes are located in the quiz/ subfolder. Quiz questions are stored in Markdown format, one file per quiz.

Practice content consists of background text, media files, support files and quizzes in the practice/ subfolder of each chapter.

Background text is located in content/ folder as a series of sections. Each section consists of general information, tutorial information followed by description of actual work items and a quiz. Sections are indexed in the README.md file.

Support files for work items are stored in the support/ subfolder. There is a subfolder for each section. Each section subfolder contains source code, Makefile (or other build files, if required) and support files.

Media files are images and films used in text for visual support. Media files are located in the media/ subfolder.

Quizzes are referenced at the end of each section as a form of (self-)assessment. Quizzes are located in the quiz/ subfolder. Quiz questions are stored in Markdown format, one file per quiz.

Contributions are welcome. See the contribution guide on how you could report or fix issues and on how you can improve the content.

Reviewers are requested to follow the reviewing guide.