Writing on cybersecurity, tools, and life by Omar Tsai.https://thaomar.com/en-cahttps://thaomar.com/blog/2026-04-08-osda-writeup/https://thaomar.com/blog/2026-04-08-osda-writeup/My long overdue writeup of the OSDA certificationWed, 08 Apr 2026 00:00:00 GMTcertificationhttps://thaomar.com/blog/2026-03-30-how-i-vibe-code/https://thaomar.com/blog/2026-03-30-how-i-vibe-code/Now that working with AI is a must, here's what I've learned so far.Mon, 30 Mar 2026 00:00:00 GMTworkflowhttps://thaomar.com/blog/2025-11-06-wazuh-kubernetes/https://thaomar.com/blog/2025-11-06-wazuh-kubernetes/Updating wazuh manager password in kubernetesThu, 06 Nov 2025 00:00:00 GMTkubernetesdevopshttps://thaomar.com/blog/2023-03-27-back-to-blogger/https://thaomar.com/blog/2023-03-27-back-to-blogger/Moving back to Blogger for casual writing, for now.Mon, 27 Mar 2023 00:00:00 GMTmetahttps://thaomar.com/blog/2022-09-21-vulnserver-for-osed/https://thaomar.com/blog/2022-09-21-vulnserver-for-osed/How I set up a Windows 10 VM with Vulnserver, WinDBG, and IDA Free to simulate the OSED lab environment.Wed, 21 Sep 2022 00:00:00 GMTcybersecurityosedtoolsguidehttps://thaomar.com/blog/2022-07-03-meaningful-work-and-relationships/https://thaomar.com/blog/2022-07-03-meaningful-work-and-relationships/Taking inspiration from Ray Dalio, Robert Kiyosaki, and the mid-2022 market pullback.Sun, 03 Jul 2022 00:00:00 GMTlifebooksfinancereflectionhttps://thaomar.com/blog/2022-01-09-reflection-2021/https://thaomar.com/blog/2022-01-09-reflection-2021/Graduation, grad school, relationships, and goals for 2022.Sun, 09 Jan 2022 00:00:00 GMTlifereflectionannual-reviewhttps://thaomar.com/blog/2021-09-01-oswe-review/https://thaomar.com/blog/2021-09-01-oswe-review/My review of the Offensive Security AWAE course and OSWE exam experience.Wed, 01 Sep 2021 00:00:00 GMTcybersecurityoswecertificationreviewhttps://thaomar.com/blog/2021-06-03-graduation/https://thaomar.com/blog/2021-06-03-graduation/A memorable 5 years of my undergraduate degree at UBC.Thu, 03 Jun 2021 00:00:00 GMTlifeuniversitymilestonehttps://thaomar.com/blog/2020-12-30-closing-out-2020/https://thaomar.com/blog/2020-12-30-closing-out-2020/My thoughts on 2020 — pandemic, markets, travel, and what's next.Wed, 30 Dec 2020 00:00:00 GMTlifereflectionannual-reviewhttps://thaomar.com/blog/2020-08-30-passed-oscp/https://thaomar.com/blog/2020-08-30-passed-oscp/Finally passed OSCP on my second attempt. Here's how it went.Sun, 30 Aug 2020 00:00:00 GMTcybersecurityoscpcertificationhttps://thaomar.com/blog/2020-07-29-vscode-markdown-pdf-wsl/https://thaomar.com/blog/2020-07-29-vscode-markdown-pdf-wsl/How to get the VSCode Markdown PDF extension working inside WSL1 on Ubuntu.Wed, 29 Jul 2020 00:00:00 GMTtoolswslvscodeguidehttps://thaomar.com/blog/2020-07-19-oscp-attempt-1/https://thaomar.com/blog/2020-07-19-oscp-attempt-1/I really wish I could say I passed. Lessons learned from my first OSCP exam attempt.Sun, 19 Jul 2020 00:00:00 GMTcybersecurityoscpcertificationhttps://thaomar.com/blog/2020-03-17-volatile-markets/https://thaomar.com/blog/2020-03-17-volatile-markets/When gravity pulls the markets back down — thoughts on the COVID bear market.Tue, 17 Mar 2020 00:00:00 GMTfinanceinvestinghttps://thaomar.com/blog/2020-03-14-schools-closed/https://thaomar.com/blog/2020-03-14-schools-closed/UBC is closed for the rest of the term due to COVID-19.Sat, 14 Mar 2020 00:00:00 GMTlifecoviduniversity