Building a cloud environment using OpenStack_SK Shielders

This training will help you understand the world-famous cloud, build your own cloud environment, and strengthen your ability to use it easily.

If it’s difficult to determine whether an attack has occurred even after examining the packets, we provide step-by-step guidance based on practical cybersecurity incident analysis experience.

This training was created to first help privacy officers recognize and understand the requirements for establishing a proactive protection system, as previously announced through the June 2026 Personal Information Protection Act and the Personal Information Protection Commission's (PIPC) compliance inspections. It aims to help companies review their current status, identify areas for improvement, and establish future action plans. Based on over 8 years of experience in providing advisory and consulting services for personal credit information protection, this course is designed to support strategy formulation and the preparation of reporting documents for executive management.

The most difficult thing when malware is distributed is script obfuscation. Understand the obfuscation technique and analyze the malware executable file that is distributed after decrypting it.

This course covers the basics of Amazon EKS, an AWS-managed Kubernetes service, designed for beginner Amazon EKS users.

Let's leverage AWS's key networking services to build everything from simple, basic networks to multi and hybrid networks, understand traffic flow in the architecture, and develop the skills and confidence to implement real cloud networks ourselves.

For those aiming to pass the "Network Specialist Examination": This course is a learning program that condenses only the key points of the IPA Network Specialist Examination. It focuses on themes directly connected to passing the exam and is designed to help you acquire knowledge efficiently. Rather than emphasizing volume, we carefully select and explain "the essential parts you must master to pass"! Let's work hard together toward passing the Network Specialist exam!

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!

Network studies that you give up on every time because they are difficult and boring. Finish it once and for all with this textbook.

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.

Creating a simple Omok game using Unity and a C# server

This is a beginner level network course that solidifies the fundamentals of networks through packet tracer practice.

Learn about the network multiplayer framework, also known as the other Unreal Engine. Learn the key concepts, inner workings, and optimization techniques you need to know when creating a network multiplayer game, then create a hack & slash type PvP battle game.

We have gathered all the essential network theories that those planning to operate services in an AWS environment must know. Through this course, you can understand the principles of how AWS VPC (Virtual Private Cloud), composed of private networks using Private IPs, works and gain a detailed understanding of the roles of services such as ALB and NLB.

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!

Based on over 25 years of hands-on experience in mobile device verification and commercialization, as well as more than 100 real-world job interviews, you will learn VoLTE/IMS call processing and 5G/LTE Data Throughput from a practical perspective. You will connect messages with measurement conditions to explain performance differences, then practice presenting the basis for your judgments and proposing the next comparative test in technical interviews at major U.S. tech companies.

A former AWS employee explains what a well-architected framework looks like within AWS. We will cover how to build an architecture that starts small and scales to handle massive traffic. You will learn various AWS services through a hands-on approach, solving the diverse challenges encountered when designing architectures for high availability and security.

This is Part 1 of a roadmap course that neatly organizes, in a short amount of time, the essential computer science (CS) knowledge you need to excel at development and data. This course has also been used for years as an in-house course at top companies in Korea. Based on 20 years of experience in the field, ranging from systems software to web and app development and data science, this course systematically and thoroughly covers the core concepts you need to excel at development and data—while keeping them easy to understand.

I have created an 'Introduction to MSA' course that is easy for non-majors to understand and can be applied immediately in practice!