[디펙업_ONE] Understand the IT systems used at work in one go

We provide an easy understanding of the concepts and principles of generative AI from a humanities perspective, including literature, film, music, and history, while exploring the cultural impacts and life changes AI will bring. We offer practical insights and strategies on how individuals and companies should respond and prepare for the AI era.

Understanding Manufacturing Security Through Real-World Cases in the Age of AI is a course designed to help learners easily understand the increasingly important topic of OT security in smart factories and AI-based manufacturing environments through real-world cases. This course explains key concepts frequently encountered in manufacturing environments, including OT, ICS, PLC, SCADA, HMI, and MES, and compares the differences between IT security and OT security. It also examines, through real-world cases, security threats that may occur in manufacturing environments, such as ransomware, remote access abuse, partner account compromise, production line shutdowns, equipment malfunctions, and data tampering. Through this course, learners can understand the basic structure of OT security in manufacturing and identify the security perspectives needed to protect production equipment and industrial control systems. They can also establish a common foundation for learning subsequent manufacturing security courses by industry.

Using AI has become easier, but model cards and papers are still difficult to read, even just a few lines. Although you can look up the meanings of individual words, it’s not clear how those words connect to one another. This course builds up around 160 essential terms that frequently appear in AI documents, in the easiest order to understand them, so that in each lesson you can accurately read a single sentence from an actual document.

With a good guide, the black terminal window is no longer something to fear. I’ll be your reliable companion as you journey through the world of Linux. ● Beginners with no technical background ● Students majoring in computer engineering or computer science ● Developers who need foundational training ● Those who are intimidated by a black window with white text ● Those who feel overwhelmed about launching a real service Practice environment: WSL / Virtualbox / Ubuntu 24.04 / Rocky 9 An instructor with 26 years of experience will guide you at a beginner-friendly level. One hour a day for one week, and you’ll start to see Linux.

👉 Recommended for those who want to view AI results not as “values that simply came out,” but as understandable judgments. What exactly does AI use as the basis for making judgments? This course structurally explains how data affects AI’s judgments and why data is said to be important. You will learn how AI interprets numerical information and develops criteria for making judgments.

This is a course to comprehensively understand 5G networks. We will look at the evolution from 1G to 5G and learn about the characteristics and architecture of networks including 5G RAN and 5GC.

The real story of an AI-native company run by GolbinHacker, the 1st place winner of Kakao AI TOP 100 and author of the bestseller "The Best Prompt Engineering Lecture." It explores how just two developers build and operate a service, along with the new competencies developers and organizations need in the AI era through real-world cases.

Diagnose the future of my work and learn how to grow together with AI What we need now is the power to read the future of my work! In the midst of industrial restructuring and technological transformation trends, we'll specifically tell you from a job function perspective what changes are coming to your work now and how you can prepare for them.

How long will you keep struggling with repetitive daily research and document writing? I, too, was an ordinary office worker who worked overtime every day trying to find key insights amidst an overflow of information. However, after integrating Gemini 3 into my workflow, I experienced a significant increase in work speed. Boost your productivity by utilizing Gemini in your tasks.

This course is not about collecting a large number of prompts. It is about learning an AI directing framework that can be applied immediately to any role or task. Even if you download prompts for specific tasks, in practice you still need to find the prompt you need, adapt it to your situation, and spend time revising the output. Through the M·A·G·I·C prompt framework, you will learn how to design the purpose, context, examples, completion criteria, and review criteria all at once. From reports, proposals, and marketing execution plans to meeting summaries, work emails, and repetitive task automation, you can connect everything with a single framework, reduce unnecessary revision conversations with AI, and build practical AI skills that will change the speed of your work starting tomorrow.

[Sustainable AX and How to Collaborate with AI Colleagues] Have you encountered these limitations when trying to apply AI tools to your work? 🙋‍♂️ : "Entering the commands from scratch every time is actually more of a hassle." 👨‍💻 : "I’m tired of one-off tasks that simply involve repeating copy-and-paste." 🤷‍♂️ : "Since I don’t have a background in development, I can’t even imagine automating more advanced tasks." What we need now is not simply 'how to use tools'—learning the features. It is a mindset of cultivating your own AI colleague—one that understands the context of your work and grows smarter on its own over time. We transparently share a practical, field-oriented AX (AI transformation) guideline developed by a non-developer planner through countless trials and errors in the workplace.

These days, it's become so famous that you can't afford not to know about it - Nano Banana? Gemini 3.0? In this course, you can learn to handle everything with the Gemini API.

Create a wide range of design deliverables using ChatGPT Images 2.0, including logos, product photos, mockups, banners, wedding snapshots, wedding invitations, POP displays, menus, and product detail pages. This hands-on course teaches you how to write prompts to achieve the desired results and how to structure reusable templates.

See exam types and trends at a glance! Strengthen your practical skills with approximately 100 questions. The perfect preparation for the AWS AI Practitioner exam, allowing for systematic study even when preparing on your own.

Learn the core features of Google Workspace Gemini that you can use immediately in your work—not AI coding or agent development—in just 3 hours. Without complicated hands-on exercises, you’ll gain a broad but shallow understanding of AI-powered workflow automation and productivity improvement through easy, image-based explanations.

Many people use Docker, but few understand its underlying principles. Without understanding these principles, you can only rely on searching for answers when problems arise, rather than solving them yourself. The essence of Docker lies in the operating system. This course is not a superficial overview of memorizing a few commands; it delves deep into the inner workings of the operating system that makes up Docker. Once the internal structure becomes visible, Docker is no longer difficult.

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

The grounds previously used to pursue certifications such as ISMS-P, including penalty reductions, have become even more significant. With the revision of the Enforcement Decree of the Personal Information Protection Act following a series of large-scale personal information breaches involving Coupang, SKT, Lotte Card, and others, an unprecedented system has been introduced that provides a reduction in administrative fines—40% of the 10% of revenue—when a proactive protection system has been established before an incident occurs. Accordingly, a legal basis has now been established through the reduction system for the priority introduction of measures such as inspections of personal information processing systems and the securing of dedicated personal information protection personnel, which had previously been difficult to manage and inspect under the existing Personal Information Protection Act. Therefore, additional items must be reflected in the personal information protection regulations, additional records of personal information protection activities must be prepared, and the time has come to review budgets, including records of the implementation of personal information protection solutions. These measures, scheduled to take effect from the second half of 2026, must be reflected in the personal information management system without delay so that reporting to the CPO can be carried out.

Have you learned C++ and Java separately but felt confused about why they were designed differently? This course compares both languages simultaneously, helping you fully understand object-oriented structure, memory, and operational principles. Beyond simple syntax, you will gain a deep understanding through hands-on practice of: ✔ Compilation structures ✔ Memory model differences ✔ Internal workings of inheritance and polymorphism ✔ Virtual tables and JVM architecture Additionally, we provide a 'Python-based code comparison auto-generator tool' to help you visually understand the conversion structure between C++ and Java. We will elevate your skills from simply "using" object-oriented programming to a level where you can "design and explain" it.