Ethereum dApp development and projects, blockchain smart contracts

Network packet analysis is essential when conducting incident analysis and vulnerability analysis. Among the tools available, Wireshark is the most widely used, and this course covers the complete utilization of Wireshark and provides understanding through incident analysis case studies.

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 course for those preparing for bug hunting (bug bounty) and mock hacking work. Web hacking is essential for mock hacking work. After learning web hacking, you can learn various cases from web hacking to system hacking by using a virtual web/server environment where you can study based on scenarios.

We cover everything from introduction to utilization of the framework for flexibly running distributed systems in a container environment using “Kubernetes,” an open source virtualization project based on containers.

IT services are rapidly transitioning to cloud environments. This covers everything from basic virtual infrastructure construction to understanding service operation, monitoring, and security areas for each area to secure the MS Azure cloud environment.

In mock hacking practice, mock hacking of iOS mobile apps is now essential! This is a basic lecture for those who are new to iOS app diagnosis. It consists of basic prerequisite knowledge required for diagnosis and practical training centered on the mock hacking work.

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 is an introductory malware analysis course that even beginners can easily understand. Based on methodologies such as static analysis, dynamic analysis, and automated analysis of malware analysis, you will analyze various sample cases. It also covers in detail how to use various tools necessary for malware analysis.

You can learn how to fully utilize Frida, which is used in mock hacking practice.

Digital forensic analysis techniques are used in many fields, but it is always difficult to study. This course is composed of theory and practice to make it easy to follow the many uses of digital forensic analysis.

This training is a hands-on course covering infrastructure construction using Docker container technology, vulnerability analysis, and API web server diagnostics. It is designed to comprehensively learn from the basic concepts of Docker to its application in real-world environments, security vulnerability analysis, and response.

You can understand the integrated log analysis construction step by step through practice using ELK, and it presents a method to visualize the logs of each system by integrating them. It can be used in various fields such as general data analysis utilization, breach incident analysis response, etc.

You can learn about the functional utilization of OWASP-ZAP, a web proxy required for running web services, and the virtual environment image Security Onion for analyzing breach response according to attack patterns.

We will be holding an online lecture on the topic of “Understanding/Practicing File Systems through Hacking Contest Problems.”

IT services are rapidly transitioning to a cloud environment. You will learn security practices from the basics of building a virtual infrastructure to monitor security threats in each area and diagnose vulnerabilities to secure the domestic Naver cloud environment.

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.

You will learn techniques that can be applied in various fields of IT security, starting from the introduction to Python programming.

It includes module analysis and development stages using the vulnerability analysis framework Metasploit. This is the stage where you can freely use and utilize the modules you created after taking the beginner-intermediate Metasploit course. This is a high-level lecture that you cannot hear anywhere else in Korea or abroad.

Cyber security threats are increasing every year, targeting external services and internal system penetration and personal information theft. This article covers basic security activities that developers and operators must perform to operate, develop, and protect infrastructure, applications, and the cloud.

In Disk Forensics CTF, we will learn about the various types of problem analysis methods that occur on the disk. We will look at the process of analyzing artifacts related to the disk structure and the operating system installed on the disk to find the hidden message or answer you want in the problem.

This is the process of developing a blockchain Web3 web application.

Learn about blockchain by developing Ethereum-based DAPPs. You can also learn about practical development through the implementation of Smart Contracts.

This is a must-see lecture for blockchain planners, developers, and company representatives. If you didn't have time to study separately, you can understand the core of the Bitcoin and Ethereum white papers through this summary lecture.

Learn about implementing an NFT marketplace (Ethereum, Polygon) with jQuery.

This course is a hands-on process where you'll build an NFT marketplace from scratch using frontend technologies and web3.js to leverage Solidity smart contracts. Students will implement all marketplace functions from NFT minting to selling, buying, and deleting, and deploy directly to the latest testnets including Ethereum Sepolia, Polygon Amoy, and Kaia Kairos networks. You'll also learn how to use IPFS for distributed storage of NFT images and metadata, experiencing a real service-ready DApp architecture that goes beyond simple demo-level implementations. ✨ Course Features Full-stack learning: React UI, smart contract development, and multi-chain deployment all in one Latest environment support: Sepolia·Amoy·Kairos testnet support, MetaMask integration Master core NFT processes: Image upload (IPFS) → Metadata generation → Minting → Marketplace transactions Practice-focused: Real service development experience including transaction handling, UX design, and multi-chain support

You can understand metaverse technology in a short period of time, and we will teach you practical skills for creating metaverse worlds and issuing and selling NFTs without coding.

How to view safe indicators and objective data that should not be missed when investing in Bitcoin and altcoins, and share real airdrop know-how and practical methods that made it from 0 won to 100 million won

This lecture covers the basics of crypto investment, including the value and risks of Bitcoin, Ethereum, and other Layer 1s (Cosmos).

"There's data, but I don't know how to interpret it." This is the most common concern among people just starting with on-chain analysis. In this course, a 10-year veteran data analyst and on-chain researcher fully reveals all the tools and interpretation techniques used in real market analysis. ㆍWhich indicators react first before coin prices move ㆍWhether whales are accumulating or dumping ㆍHow to read market sentiment through bridge and stablecoin flows ㆍHow to extract data through Etherscan and Dune without programming ㆍAnd the interpretation patterns and strategies used by professional analysts This course is designed not to stop at "just looking" at on-chain data, but to help you build an analytical framework that leads to investment decisions.