> For the complete documentation index, see [llms.txt](https://infosec.zeyu2001.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://infosec.zeyu2001.com/2023.md).

# 2023

- [DEF CON 31 CTF && Midnight Sun CTF Finals 2023](https://infosec.zeyu2001.com/2023/def-con-31-ctf-and-and-midnight-sun-ctf-finals-2023.md): My first hacker summer camp experience 🏖️
- [From XS-Leaks to SS-Leaks Using object](https://infosec.zeyu2001.com/2023/from-xs-leaks-to-ss-leaks.md): Using nested objects, lazy loading and responsive images to leak data
- [Regular Expressions Are Hard](https://infosec.zeyu2001.com/2023/regular-expressions-are-hard.md): How to avoid common pitfalls.
- [ReadiumJS Cloud Reader — Everybody Gets an XSS!](https://infosec.zeyu2001.com/2023/readiumjs-cloud-reader-everybody-gets-an-xss.md): Stumbling upon an XSS paradise.