Writing about cybersecurity, AI, and the pursuit of continuous learning.https://rajchettri.com/https://rajchettri.com/blog/agent-skills-backup-restore/https://rajchettri.com/blog/agent-skills-backup-restore/A Git bundle, a post-commit hook, and a temporary restore gave me a way to check whether my agent skills were actually recoverable.Tue, 29 Sep 2026 00:00:00 GMTagent-skillsgitbackupsautomationhttps://rajchettri.com/blog/pihole-ethernet-migration/https://rajchettri.com/blog/pihole-ethernet-migration/Moving household DNS off Wi-Fi involved more than an adapter: a new reservation, a stale SSH shortcut, and checks that had to survive a reboot.Tue, 29 Sep 2026 00:00:00 GMTpi-holeraspberry-pidnshome-labhttps://rajchettri.com/blog/raj-os-personal-context-hermes/https://rajchettri.com/blog/raj-os-personal-context-hermes/I keep a small operating manual in Obsidian so Hermes can work with my priorities, preferences, and constraints. Here is how I organize that context and keep it current.Sat, 19 Sep 2026 00:00:00 GMThermesobsidianaiproductivityhttps://rajchettri.com/blog/avengercon-x-ai-threat-landscape/https://rajchettri.com/blog/avengercon-x-ai-threat-landscape/What NVIDIA's AI red team, an autonomous adversary-emulation platform, and a social engineering researcher taught me about how fast both sides of cybersecurity are being forced to move.Wed, 01 Jul 2026 18:01:00 GMTaicybersecuritythreat-landscapeconferencehttps://rajchettri.com/blog/avengercon-x-origins-and-culture/https://rajchettri.com/blog/avengercon-x-origins-and-culture/The origin story of AvengerCon X, the cultural rift it was built to bridge, and what the 780th MI Brigade's history panel revealed about standing up a cyber force from nothing.Wed, 01 Jul 2026 18:00:00 GMTcybersecuritymilitarycareerconferencehttps://rajchettri.com/blog/avengercon-x-offensive-ai-workshop/https://rajchettri.com/blog/avengercon-x-offensive-ai-workshop/Notes from Day 1 of AvengerCon X, a hands-on workshop where AI coding agents drove a 40-challenge offensive security range, and what the experience taught me about human-agent teaming.Tue, 30 Jun 2026 00:00:00 GMTaicybersecurityctfconferencehttps://rajchettri.com/blog/hermes-obsidian-publishing-pipeline/https://rajchettri.com/blog/hermes-obsidian-publishing-pipeline/My website is an Obsidian vault. Here's how Hermes, obsidian-git, and Astro turn a voice memo into a published blog post with almost no friction.Mon, 08 Jun 2026 00:00:00 GMTobsidianaiproductivityhermestoolshttps://rajchettri.com/blog/hermes-telegram-integration/https://rajchettri.com/blog/hermes-telegram-integration/How I wired Hermes Agent to Telegram so I can task my desktop AI from anywhere, and why this one integration changed how much I actually use it.Mon, 01 Jun 2026 00:00:00 GMTaitoolsproductivityhermestelegramhttps://rajchettri.com/blog/hermes-desktop-ai-agent/https://rajchettri.com/blog/hermes-desktop-ai-agent/Why I installed Nous Research's Hermes Agent on my own machine, how the setup works, and what it actually does for me day to day.Mon, 25 May 2026 00:00:00 GMTaitoolsproductivityhermeshttps://rajchettri.com/blog/running-llms-locally/https://rajchettri.com/blog/running-llms-locally/Why I run AI models on my own hardware, the tradeoffs, and step-by-step setup for the two tools I reach for most.Fri, 08 May 2026 00:00:00 GMTcybersecurityaihttps://rajchettri.com/blog/my-cybersecurity-learning-path/https://rajchettri.com/blog/my-cybersecurity-learning-path/How I built a cybersecurity path through systems thinking and continuous learning.Sat, 28 Mar 2026 00:00:00 GMTcybersecuritycareerlearningmilitaryhttps://rajchettri.com/blog/ceh-study-guide/https://rajchettri.com/blog/ceh-study-guide/Lessons from studying for the Certified Ethical Hacker exam and what makes it different from Security+.Sun, 08 Jun 2025 00:00:00 GMTcehcertificationsethical-hackingcybersecurityhttps://rajchettri.com/blog/what-is-obsidian/https://rajchettri.com/blog/what-is-obsidian/Why Obsidian is my go-to tool for organizing knowledge, study notes, and cybersecurity research.Wed, 18 Sep 2024 00:00:00 GMTobsidianproductivitytoolsnote-takinghttps://rajchettri.com/blog/i-love-readwise/https://rajchettri.com/blog/i-love-readwise/How Readwise transformed my reading workflow and helped me actually retain what I read.Sat, 15 Jun 2024 00:00:00 GMTreadwiseproductivitytoolslearninghttps://rajchettri.com/blog/how-to-learn-effectively/https://rajchettri.com/blog/how-to-learn-effectively/Evidence-based learning strategies that actually work for technical skills and certification prep.Sun, 12 May 2024 00:00:00 GMTlearningproductivitycertificationsstudy-tipshttps://rajchettri.com/blog/comptia-security-plus-prep/https://rajchettri.com/blog/comptia-security-plus-prep/Practical tips and resources for passing the CompTIA Security+ certification on your first attempt.Fri, 22 Mar 2024 00:00:00 GMTcertificationssecurity+cybersecuritystudy-guidehttps://rajchettri.com/blog/python-for-cybersecurity/https://rajchettri.com/blog/python-for-cybersecurity/How Python became my go-to language for security automation, scripting, and tool building.Tue, 05 Dec 2023 00:00:00 GMTpythoncybersecurityprogrammingautomationhttps://rajchettri.com/blog/building-my-first-home-lab/https://rajchettri.com/blog/building-my-first-home-lab/How I set up a home lab on a budget for hands-on cybersecurity practice and why you should too.Sun, 10 Sep 2023 00:00:00 GMThome-labcybersecurityhands-ontoolshttps://rajchettri.com/blog/starting-my-cybersecurity-journey/https://rajchettri.com/blog/starting-my-cybersecurity-journey/Why I decided to transition into cybersecurity and what the first steps looked like.Wed, 15 Mar 2023 00:00:00 GMTcybersecuritycareerbeginners