Basic SQL Grammar for Successful SQL Injection Attacks

An introductory course on web hacking for information security beginners and web developers! Start web hacking in a fun way with this course!

The ultimate web hacking master! File upload vulnerability attack technique! This is a training that will further improve the students' web hacking skills through a completely different approach from the existing known methods!

The ultimate web hacking! File upload vulnerability attack technique! Following Part 1, Part 2 '3rd part' education covers more advanced techniques in depth.

The ultimate web hacking! File upload vulnerability attack technique! Part 2 of the 'Part 1' education follows Part 1 and covers more advanced techniques.

A web hacking course where you can learn, practice, and understand the principles by simply following along with WebGoat problem solving!

Easy-to-follow file download vulnerability attack techniques from web hacking beginners to practitioners! File download vulnerability attack techniques and advanced attack techniques used in practice! And how to apply secure coding!

This lecture covers the king of client attacks, XSS (Cross-Site Scripting). You can systematically learn about the basic concepts of XSS, the attack principles, and most importantly, what process to go through to perform the attack procedure.

The ultimate web hacking! File upload vulnerability attack technique! Part 2 of the 'Part 1' education follows Part 1 and covers more advanced techniques.

The ultimate web hacking! File upload vulnerability attack technique! Part 2 of the '2nd part' education follows Part 1 and covers more advanced techniques.

Basic understanding of web shells and web shell detection solutions, as well as attack methods and obfuscation techniques for bypassing them!

The second lecture on SQL Injection, taught by a mock hacking practitioner! The first lecture covered the basics and the core principles of attacks, while the second lecture is about technical advanced attack techniques. Therefore, taking the first lecture is a must!

SQL Injection, the flower of web hacking, explained by a mock hacking practitioner! Learn attack and defense at the same time.

We will take a closer look at the working principles through core theories and practices of the OAuth 2.0 protocol. And we will analyze the OAuth 2.0 protocol from the perspective of hacking and security.

This is a course where you can learn the basics of web technology. You can learn the basics of web technology in a short period of time. If you are interested in studying or getting a job related to the web, you must take this course!

In this course, you will learn how to create secure web services.

Web shell is the core tool for file upload vulnerability attacks! Let's learn how to create a web shell together through this lecture~!

Introduction to web hacking and mock hacking for those who are new to web hacking and job seekers in related fields

In this lecture, we aim to create a Web Scraping API server using the Naver Shopping site. We will show you how to configure a managed API server by connecting MySQL and configuring a 3-tier architecture!!

An introductory course on web hacking for information security beginners and web developers! Start web hacking in a fun way with this course!

This lecture is a free special lecture for those who have chosen a career in IT security from Boan Project (www.boanproject.com). It will be especially helpful if you have chosen a career in mock hacking.

Let's build a project using Ktor, the most popular project in Kotlin, and master Kotlin! 😆

We enable you to fundamentally understand and resolve issues where Hangeul appears broken on web pages or in databases, or files contain unknown characters.

Kotlin mastery via virtual payment server course.

This course covers how to set up multi-module projects from scratch using Kotlin and Spring Boot. It proceeds with a hands-on approach, covering everything from the basic concepts of modularization to Gradle configuration, managing dependencies between modules, and actual application development. If you are a beginner or intermediate developer looking to learn the fundamentals and practical application of multi-modules, please refer to this course.

This course is designed to help students learn and practice PHP programming concepts. It is designed for students who want to learn PHP programming concepts.

This is a practical, hands-on course designed so that even SQL beginners can start easily and apply it right away. ✨ Learn to pull data with SELECT, connect with JOIN, organize with GROUP BY, and more— master only the most frequently used features in real work, in an easy and fun way! 📊 We minimize complex explanations and focus on realistic examples that make you think, "Ah, this is why SQL is important!" 💡 Data analyst, developer, data engineer… Whatever path you choose, SQL is an essential skill. 🚀 With this one course, solidify your fundamentals and develop the data intuition to solve problems on your own in real-world situations! 🔥 Start right now. This is the easiest first step into the world of data! 🌍💙

This course is a complete and structured journey into MySQL, designed to take students from SQL fundamentals to advanced database concepts. Through clear explanations, step-by-step demonstrations, and practical examples, common difficulties such as writing correct queries, understanding joins, or structuring databases are addressed in a simple and progressive way. The course focuses on hands-on learning: each concept is explained, demonstrated, and reinforced with realistic use cases. Students learn not just what to write in SQL, but why it works and how to apply it confidently in real-world database scenarios. By following a logical progression—from basic syntax to advanced features like transactions, views, indexing, and optimization—students gain a deep and practical understanding of MySQL that they can immediately apply in projects or professional environments.

This course teaches you how to implement modern web applications that combine the accessibility of the web with the excellent information management capabilities of a database by linking PHP and MySQL.

This is a course where you can learn the basics of web technology. You can learn the basics of web technology in a short period of time. If you are interested in studying or getting a job related to the web, you must take this course!

This lecture provides a general guide on how to prepare while studying when you want to choose a career in IT security penetration testing, and what questions and answers to prepare for the interview. I will share my experience working as a penetration testing consultant, at large companies, and in the financial sector, and currently running a penetration testing consulting business.

IT services are rapidly transitioning to cloud environments. You will learn security practices from basic virtual infrastructure construction to security threat monitoring and vulnerability diagnosis for each area to secure the Amazon AWS cloud environment.

This is a basic SQL SELECT grammar lecture that starts without installing SQL.

We conduct app log analysis using data from Google Analytics 4 and Firebase. It includes useful content for practical use, such as arrays, window functions, funnels, retention, Google Sheets, and more.

This is a [Data Analysis, Programming Language] lecture prepared for SQL data analysis beginners. This is a SQL SELECT basic grammar lecture that starts without installing SQL.