Blockchain, Virtual Asset Exchange Security

Virtual assets and cryptocurrencies have driven financial innovation, but they are also being used as tools for crime, money laundering, and data breaches. This course starts with the basic concepts of virtual assets and blockchain, tracks actual cryptocurrency transaction flows, and analyzes suspicious fund movement structures.

Learn how to implement an NFT marketplace (Ethereum, Polygon) using jQuery.

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.

Developing decentralized applications (Dapps) on the Ethereum blockchain using the Solidity language and the Truffle build framework.

Victims of various financial fraud incidents, such as voice phishing, malicious URLs, mobile scams, account and card misuse, internet banking fraud, and ARS authentication scams, are on the rise. Recently, hacking and fraud techniques have become more sophisticated, exploiting vulnerabilities in open banking, simple payment services (Pay), enhanced scam methods, hackers' use of leaked personal information, and the takeover of personal PCs and mobile devices. Financial authorities and various financial institutions do not specifically disclose the procedures of these incidents or the hacking methods used to financial consumers. Having received reports from those around me about the growing misunderstandings among people who have never experienced hacking, I recognized the seriousness of the situation and produced this educational material. I sincerely hope you gain an accurate understanding of hacking, comprehend the relevant laws and policies, and properly establish proactive prevention systems and strengthen response measures. (Under current law, you are responsible for any incidents that occur.)

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

Vulnerability analysis and evaluation for electronic financial infrastructure as of 2025, covering DBMS, WAS (PaaS), and PC based on the revised standards for critical information and communications infrastructure in the second half of 2025. Additionally, penetration testing explained according to the standards revised in the second half of 2025, including mobile penetration testing. Expect skill improvement through the transfer of know-how, along with fast and accurate inspection methods and remediation plans.

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

“I have the data, but I don’t know how to look at it.” This is the most common concern for those starting on-chain analysis for the first time. In this course, a 10-year veteran data analyst and on-chain researcher fully reveals all the tools and interpretation techniques used in actual 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 via Etherscan and Dune without programming ㆍAnd the interpretation patterns and strategies used by professional analysts This course is designed to help you go beyond "just looking" at on-chain data and build an analytical framework that leads to actual investment decisions.

KCA Information Security Risk Manager (ISRM) certification course! The cornerstone for acquiring the top 3 personal information protection certifications: CPPG, ISMS-P!

Understand the basic concepts of AI and blockchain and learn how to apply them in real business scenarios. Beyond just theory, you will work on practical projects combining both technologies through a hands-on format to acquire the skills to master next-generation technology.

This is a lecture [Certification and Practice (Security · Network), Security] prepared for beginners.

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.

This course is a hands-on practical session where you will build your own NFT marketplace using Solidity smart contracts, frontend technologies, and web3.js. Students will implement all marketplace features—from NFT minting to selling, buying, and deleting—and deploy them directly to the latest testnets: Ethereum Sepolia, Polygon Amoy, and Kaia Kairos. Additionally, you will learn how to use IPFS for the decentralized storage of NFT images and metadata, allowing you to experience a production-ready DApp architecture that goes beyond a simple demo. ✨ Key Features of This Course Full-Stack Learning: Covers React UI, smart contract writing, and multi-chain deployment all at once. Up-to-Date Environment: Supports Sepolia, Amoy, and Kairos testnets with MetaMask integration. Master the Core NFT Process: Image upload (IPFS) → Metadata creation → Minting → Marketplace trading. Practical & Hands-on: Gain real-world service development experience, including transaction handling, UX design, and multi-chain support.

Repeatedly study the 100 most frequently appearing CPPG core topics through theory, mind maps, and problem solving.