Have you ever wondered how real attackers carry out cyberattacks? BHPT is a practice-oriented comprehensive course where you use on-demand labs to conduct penetration testing on specific hosts from an attacker's perspective, learning the methodology of discovering, attacking, reporting, and responding to vulnerabilities.

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.

When studying information security, you've probably had this thought at least once: "Firewall, CSPM, SIEM... I've heard the names, but I'm not exactly sure what they do." This course is designed for those new to information security to clearly grasp the concepts of the 'security solution landscape.' From each solution's concepts, key functions, pros and cons, case studies, to the latest trends... With a total of 23 lectures, how about clearing up the vagueness about security solutions right now?

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

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

As AI systems become agentic and expand beyond text into image, audio, and multimodal capabilities, security threats are becoming significantly more complex. This lecture analyzes the latest security threats and attack techniques faced by AI Agents and Multimodal LLMs, as well as real-world cases, from an AI Red Teaming perspective.

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

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

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 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.

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

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.

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.

This course puts an end to operational vulnerabilities in Linux servers caused by incorrect permissions. Completely master file and directory permission control based on real-world practical standards.

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

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!