Haitao Zheng ArticlesSecurity notes, learning logs, and project writing by Haitao Zheng.https://tzheng.dev/How I use Astro Content Collections for my portfoliohttps://tzheng.dev/articles/astro-content-system-notes/https://tzheng.dev/articles/astro-content-system-notes/Astro Content Collections helped me turn my portfolio into a static-first content system with typed metadata, generated pages, sitemap, RSS, and a smaller attack surface.Wed, 08 Jul 2026 00:00:00 GMTMy first pass at reading CloudTrail logshttps://tzheng.dev/articles/cloudtrail-first-pass/https://tzheng.dev/articles/cloudtrail-first-pass/I started with fake logs because small data helps me understand the shape before I try bigger tools.Thu, 18 Jun 2026 00:00:00 GMTWhat I learned from a small open source PRhttps://tzheng.dev/articles/small-pr-good/https://tzheng.dev/articles/small-pr-good/A small PR can show real engineering skill when it is focused and easy for maintainers to review.Fri, 22 May 2026 00:00:00 GMTBuilding a small IOC extraction toolhttps://tzheng.dev/articles/ioc-tool/https://tzheng.dev/articles/ioc-tool/Parsing IPs, URLs and hashes is a small project, but it feels close to real blue-team work.Fri, 08 May 2026 00:00:00 GMTUsing AI tools without losing my own thinkinghttps://tzheng.dev/articles/ai-coding/https://tzheng.dev/articles/ai-coding/AI can make coding faster, but I still need to understand the code and decide what is good.Mon, 20 Apr 2026 00:00:00 GMTWhy networking basics still matterhttps://tzheng.dev/articles/networking-study/https://tzheng.dev/articles/networking-study/Security feels much clearer when I understand packets, ports, DNS, routes and Linux tools.Sun, 05 Apr 2026 00:00:00 GMTTreating my portfolio like a real systemhttps://tzheng.dev/articles/portfolio-as-system/https://tzheng.dev/articles/portfolio-as-system/A personal site can be more than a resume. It can show how I organize work and improve over time.Wed, 18 Mar 2026 00:00:00 GMTSmall notes from learning Linux and VPN basicshttps://tzheng.dev/articles/vpn-linux-notes/https://tzheng.dev/articles/vpn-linux-notes/I learned that secure systems start with small habits: reading logs, checking services, and understanding routes.Thu, 12 Feb 2026 00:00:00 GMTFinding a study rhythm for cyber securityhttps://tzheng.dev/articles/student-security-rhythm/https://tzheng.dev/articles/student-security-rhythm/Cyber security has too many topics, so I try to connect study with small projects and notes.Sat, 24 Jan 2026 00:00:00 GMT