Shin doesn't work anymore! (1 year after Shin quits his job)

This is a free special lecture that can help you strengthen your information security and personal information protection capabilities.

You can clear all the challenges of the international hacking competition SquareCTF (2018~2019). Broaden your senses and perspectives on IT and security by experiencing various challenges!

You can clear all the challenges of the hacking competition SquareCTF (2017).

You can clear all preliminary challenges of the hacking competition DIMICTF (2019).

We will cover all the challenges in Nebula, a wargame that will help you develop your system hacking skills, from start to finish, including setting up a practice environment. You will also learn the computer science knowledge required for each challenge.

Covering the content of WebGoat, the classic wargame of web hacking, we have translated and solved all the lessons and challenges from beginning to end. We provide all the tools and data needed to solve the challenges, starting with setting up the practice environment.

You now have more freedom in cyberspace than ever before.

If you've ever been fascinated by people typing in unknown Linux commands on a black screen, but were at a loss as to where to start or what to do, this course is for you.

Through the 13 speaking tips of Kang Won-guk, a former presidential speechwriter and bestselling author, you can learn how to express your thoughts maturely and authentically.

The content is composed of core competencies essential for a successful professional life, including self-leadership, interpersonal skills, metacognition, and habit change.

Methods for adults to comfortably accept discomfort in relationships, essential points for appropriate workplace distancing, and dignified relationship improvements were presented through various workplace examples.

Are you losing money because of your words and getting things messed up because of your words? If you change your speaking habits, you can properly convey what you need to say and end it, and have a refreshing conversation. We will teach you how to smoothly and naturally convey difficult situations and sharp stories, so that you can have a beneficial conversation!

Do you want to be good at speaking? Do you keep getting nervous when you present? Learn speech systematically from Heung Button, a 13-year announcer. Your life will change.

"Learning 'Better Performance' and 'Relationship Growth' with Kim Chang-ok's Know-how" Just because one speaks Korean doesn't mean everyone communicates well. Whether it's sports or cooking, or any field, if you learn from a good coach, you can grow faster, deeper, and more professionally. This class is not a simple speech class. With Kim Chang-ok, the best communication coach, it will be an experience that completely transforms your way of speaking and relating.

The most influential factor in success is 'human relationships'. Make your life happier through 'human relationship conversation skills'! You can develop 'communication skills' that are extremely useful not only for family, lovers, and friends, but also for work and social life.