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"I tried creating a bulletin board app that can use HTML tags!" What if a work by a beginner engineer would be "taken over" with just one line post? This time, we will be using an example of "Cross-site Scripting (XSS)," which is the basics of security, to see how vulnerable they are...

Security measures are unavoidable when developing web applications. Among them, "SQL injection" is known as a serious threat to databases. In this article, we will explain in an easy-to-understand manner how SQL injection works, and we will explain what it actually is...

It wasn't a very good result, but I participated in the SECCON Beginners CTF 2024, so I'll leave a Writeup as a memo. ssrforlfi source check The folder structure after unzipping tar.gz is as follows. $ find ./ ./ ./docker-compose.yml ./.env ./app...

I wanted an Ubuntu environment, so I somehow borrowed a VPS and prepared an Ubuntu environment, so I'll post a memo. Xserver has Ubuntu Desktop (GNOME) as a template, so it automatically sets up Wine and other devices, making it easy to connect with remote desktop...