RTL (Red Team Lite) is an introductory red team course that teaches the concepts and technical elements required for full-chain red team penetration testing—including attacker infrastructure setup, C2 advancement, payload creation, information gathering, initial compromise, foothold establishment, privilege escalation, lateral movement, post-exploitation, and data exfiltration—through real-world attacker TTPs.

Have you ever wondered how real attackers carry out cyberattacks? BHPT is a comprehensive, hands-on course that uses on-demand labs to simulate penetration testing from an attacker's perspective on specific hosts, teaching methodologies for discovering, attacking, reporting, and responding to vulnerabilities.

'You can respond to ISMS-P, CPPG certification, and personal information protection practices in accordance with the revision of the Enforcement Decree of the Personal Information Protection Act in 2024.

!!! Renewed course (videos + lecture materials) updated in early January 2026 coming soon !!! Updates are currently being rolled out by session, so please take note. This course is designed to help you systematically understand industrial security from a management perspective, with the goal of obtaining the nationally certified Industrial Security Manager qualification. Rather than rote memorization, the content is structured to systematically organize the concepts, structure, and flow of industrial security so that even non-security majors can understand it, enabling not only exam preparation but also practical application and career advancement.

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

This course carefully selects the core systems that beginners must know in the vast field of information security. Instead of rigid theory, it's structured to help you intuitively understand system principles through clear analogies and practical examples. With this single course, you can grasp the big picture of information security systems as a whole and develop practical skills.

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

This lecture is about automotive ECU cyber security based on a basic understanding of cryptography.

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!

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.

Mastering Threat Mitigation, Custom Rules, and API Protection for Modern DevOps Pipelines

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

Understanding network configurations is extremely important when building applications on AWS. In this course, we will clearly explain the concepts and actual construction methods of basic network configurations in AWS.

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.