From Beginner to Intermediate Hacking: Learn System Hacking & Reversing All at Once

Web Hacking - It's Okay If You're a Beginner From the Basics to Practical Skills, an Introductory Web Security Course That Teaches You to Think Like a Hacker

Everything you need to know to become an offensive white hacker. From the path to becoming an elite hacker to conquering the information security market, all the tips are compressed into one lecture!

Electronic Financial Infrastructure Vulnerability Analysis and Assessment based on 2025 standards, DBMS, WAS(PaaS), PC explained based on the Major Information and Communication Infrastructure standards revised in the second half of 2025 And penetration testing explained based on the standards revised in the second half of 2025 Additionally, mobile penetration testing as well Expected skill improvement through know-how transfer and fast and accurate inspection methods and remediation measures

This course puts an end to Linux server operational vulnerabilities caused by incorrect permissions. Master file and directory permission control based on real-world industry standards.

Cyber security threats are increasing every year, stealing personal information and abusing privacy. This course covers security issues and security activities that employees must know and follow in their work and personal lives.

Training for establishing risk assessment methods for network equipment, security devices, and control systems based on the revised Critical Information and Communication Infrastructure standards for the second half of 2025, and eliminating vulnerabilities through the integration of years of know-how and fast, accurate inspections and remedial actions. In particular, we expect efforts to secure inspection speed and improvement plans in accordance with the designation of ISMS-P and ISO27001 certification scopes. Gain experience with network equipment, security devices, and control systems—which are relatively less accessible and more difficult to set up environments for compared to Servers, DBs, WEB, WAS, PCs, and Cloud (Public, Private).

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.

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

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!

This course systematically teaches practical Docker skills (installation→operation→automation→security) and comprehensively covers the latest security threats and countermeasures in each section. It features a hands-on approach where you learn by following along with practical exercises. This curriculum is highly recommended for DevOps engineers, infrastructure engineers, and security practitioners who want to experience the latest container/cloud environments in real-world scenarios.

Incident response is less about mastering tools and more about knowing what to judge first. Rather than focusing on how to analyze malware, this course explains the realistic thought process of determining **"whether the current situation is an actual incident and what actions to take first."** Using webtoon-based real-world scenarios, we have organized the entire flow of incident response—from identifying signs of intrusion to incident assessment, initial response, containment, and analysis/forensics—in a way that even non-experts can understand. This is not just a collection of fragmented technical explanations; it is a course where you learn the decision-making criteria and response perspectives that practitioners can apply immediately in the field.