Complete SIEM Deployment in One Go: First Steps in Threat Hunting Using Wazuh and ELK (Basics)

We will conduct an in-depth analysis of major domestic security incidents, such as personal information leaks from mobile carriers, the March 20 cyberattack, and the hacking of the Blue House. By examining the causes, damages, and response processes of each incident, we will understand the security threats facing modern organizations and individuals and learn practical prevention and response strategies.

It covers everything from basic learning of Windows application defense techniques and bypass attacks to how to utilize them and analysis of the latest attack cases. It is highly recommended for those who have chosen a career in mock hacking or malware analysis.

If you have studied shell scripts, the next step is to learn how to effectively use the find, grep, sed, and awk commands. Don't search Google anymore to learn how to use these commands.

Mastering Threat Mitigation, Custom Rules, and API Protection for Modern DevOps Pipelines

If you want to work for a long time as a super developer who can handle the entire process of service development and operations alone, building a solid foundation in IT infrastructure knowledge is just as important as learning various programming languages!

Creating the same up-to-date app development environment by installing Nix on Mac, MS Windows, NixOS, all Linux distributions, and Synology NAS.

[An Introduction to Security Incident Response Through Scenarios of Web Server Hacking, Ransomware, and Account Takeovers] This course examines why various information security incidents—including web server hacking, ransomware, account takeovers, and internal intrusions—occur and how they spread, organized by incident type. By following each incident scenario, learners will understand the attack flow, analyze the key causes of the incident, and learn how to resolve the issue and prevent recurrence through security structures such as firewalls, DMZs, access control, privilege management, backups, and log monitoring. Rather than simply explaining basic security concepts, this scenario-based introductory information security course provides a comprehensive understanding of everything from analyzing the causes of security incidents to determining how to resolve them.

We provide 140 sounds in 5 areas that will help you with the CPPG certification exam. We also provide an introduction to how to use the 111 questions that are automatically generated each time, and a one-time lecture and explanation.

This course proceeds in stages where you learn and apply necessary knowledge while building infrastructure, similar to real-world practice.

This course puts an end to operational vulnerabilities in Linux servers caused by incorrect permissions. Completely master file and directory permission control based on real-world practical standards.

Learn systematically from the basics to advanced features of Zabbix, an essential tool for effectively monitoring IT infrastructure. Through real-world application cases, this course provides an opportunity to become an expert in monitoring with Zabbix.

⚓ Kubernetes CKS Certification! 🙇‍♀️ Still hesitating? 🚢 Come aboard the Ilpro-ho! We’ll take you along the optimal route.

This was produced by faithfully reflecting the latest 2026 legislative amendments and recent exam trends. I will explain everything in the easiest way possible so that even those with no prior knowledge of personal information can understand. If you follow along until the end, you will surely pass. Please trust me and join us!

This is the CPPG WIN course, the shortcut to obtaining the CPPG certification. It is a theory course designed to help you pass the 2026 CPPG certification exam, reflecting the trends from the most recent 13 exams.

Now I can analyze the Linux kernel too! The easiest kernel lecture among all Linux kernel courses.

The author of "Learning the Structure and Principles of the Linux Kernel Through Debugging" provides a thorough explanation of the core interrupt concepts of the latest Linux kernel (v6.1), which are most widely used in system software.

✅ Out of the entire series (1) ~ (7), (5) operating system, user interface, database ✅ CS101 series lectures - From basic computer theory to the latest practical examples - Provides a wide range of basic knowledge

Master AWS networking completely! Learn VPC, subnet, routing, and security with a focus on practical application, and design secure and scalable cloud network architectures. Complete the core skills that every working engineer must know in a short period of time!

This lecture is about automotive ECU cyber security based on a basic understanding of cryptography.

This is a 'Practical Linux Troubleshooting Course' where you analyze and solve problems together with generative AI, based on a Docker practice environment that reproduces 5 representative failures that occur in actual Linux operating environments. Even those who were overwhelmed about where to start examining problems can learn the problem-solving approach and thought process of field engineers through AI guidance.