System Hacking & Reversing: Learning Everything from Beginner to Intermediate in One Go

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!

Web hacking is okay, even if it's your first time. From basics to practical skills, an introductory web security course where you learn like a hacker.

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.

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

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.

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.

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.

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 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.

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

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.