About

Hi, I’m Ricardo Parraga Zaldivar, a Security Engineer and cybersecurity instructor passionate about helping others build practical, hands-on security skills. Since 2012, I’ve been creating technical training, teaching students through remote and online instruction, and using Linux as part of my daily workflow for learning, building labs, and working with cybersecurity tools. Through this website, I share walkthroughs, lab guides, projects, and practical notes covering popular security and hacking platforms including topics like, Active Directory, Windows Server, GNU/Linux, Networking, and other real-world cybersecurity topics to help you develop the skills needed for a successful career in cybersecurity.

Thanks for visiting, and I hope these resources help you on your cybersecurity journey.

Happy hacking!