Payment Ecosystem Basic Structure of Payment Systems Card payment systems are built through the collaboration of various participants. The four key entities involved are as follows: Card Hold...

Vim Plugin Manager Installation 아래의 플러그인들을 설치하기 위해서 우선 플러그 매니저를 설치해야한다. curl -fLo ~/.vim/autoload/plug.vim --create-dirs https://raw.githubusercontent.com/junegunn/vim-plug/master/plug.vim ~/.vim...

Customizing MacOS Terminal 1. Transforming Terminal with Oh My Zsh What is Oh My Zsh? Oh My Zsh is an open-source framework that makes your terminal both vibrant and powerful. By using the Zsh sh...

Setting Up Mac Mini and MacBook Air Environment with Automator Recently, I decided to purchase a Mac Mini after experiencing performance issues with my MacBook Air. However, one major downside of ...

어떤 보안 자격증을 준비하면 좋을까? (펜테스트 & 클라우드 시큐리티 진로 고민) 보안 업계에서 일하며 CEH와 CISSP를 이미 취득한 지금, 앞으로 어떤 자격증을 준비하면 좋을까 고민해봤다. 나는 침투 테스트(펜테스트)와 클라우드 보안에 관심이 많고, 실전 중심의 실력을 쌓고 싶다. 이 글은 나를 위한 로드맵이자, 나중에 비슷한 길을 가려...

What is Generative AI (GenAI)? Generative AI (GenAI) is a branch of artificial intelligence focused on learning from existing data to create new data. It has the capability to generate various typ...

How to train Supervised Learning은 결과값(y)를 알고 있을 때 쓴다. To predict with continuous variable, 이것은 Regression과 관련이 있다 - Numerical. 하지만 단순히 무엇인가 주어졌을 때 yes or no로 category를 해야한다면 classficia...

Zero Trust Architecture: A New Paradigm in Modern Cybersecurity What is Zero Trust? Zero Trust is an approach based on the security philosophy of “Never trust, always verify.” Unlike traditional ...

MITRE ATT&CK Framework: Understanding Cyber Threats and Defense Strategies What is MITRE ATT&CK? MITRE ATT&CK (Adversarial Tactics, Techniques, and Common Knowledge) is a globally acc...

1. What is Backtracking? In a nutshell, backtracking is a strategy that involves exploring all potential solutions, but immediately abandoning paths that are no longer likely to lead to a solution...