Secure Home Lab
Linux services, trust boundaries, controlled exposure, monitoring, recovery planning, automation, and documentation in one practical environment.
View Case Study →Cybersecurity • Systems • Protection • Resilience
Security with
purpose.
紫守 / SHIMORI
I build, secure, troubleshoot, and document practical technical systems across Linux, networking, infrastructure, automation, and development.
Shimori Cyber is the public evidence behind that work: case studies, technical writeups, deployments, labs, and lessons learned from real implementation.
The name combines 紫 (shi) — purple — with 守 (mori) — to guard, protect and preserve. The principle is simple: understand the system, protect what matters, and leave the next iteration stronger.
Secure Linux Workstation
A Bazzite workstation build covering security, credentials, services, developer tooling, recovery, maintainability, and daily usability.
Read Writeup →Security Through Systems
Linux, networking, security, automation, web/deployment work, and software systems with direct project evidence.
Explore Skills →Build the System
Make the architecture real.
Configure, connect and operate the environment instead of stopping at theory.
Test the Assumptions
Find where the model breaks.
Use failures, logs and unexpected behavior to understand what the system is actually doing.
Document the Result
Turn experience into evidence.
Capture decisions, troubleshooting and lessons so the work can be repeated and evaluated.
Proof Through Work
Selected Case Studies
Infrastructure • Security
Secure Home Lab Environment
Designed and operated a Linux lab around trust boundaries, service exposure, monitoring, credentials, recovery, automation, and documentation.
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Networking • Security
Network Hardening & Segmentation
Built and validated segmentation and firewall policy around explicit trust boundaries, reducing unnecessary pathways and clarifying security intent.
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Automation • AI • Development
AI-Assisted Technical Workflows
Built local-LLM and AI-assisted workflows for development, analysis, debugging, structured technical work, and repeatable automation.
View Case Study →Core Areas
Capabilities backed by hands-on work.
Cybersecurity
Hardening, assessment and practical defensive security.
Infrastructure
Linux, services, self-hosting and reliable system design.
Detection & Monitoring
Visibility, expected behavior and faster troubleshooting.
Automation
Scripts and workflows that reduce repetitive technical work.
Technical Learning
Hands-on labs, experiments and documented lessons.
Systems Strategy
Decisions grounded in architecture, operations and security.
Documentation
Recent Technical Notes
Setting Up a Secure Linux Workstation
Building a useful development workstation while managing attack surface, credentials, updates, tooling and recovery.
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Network Segmentation Basics
Practical trust boundaries, firewall intent, lateral movement and why unnecessary network paths matter.
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My Cybersecurity Journey
Background, lessons learned, current focus and the technical path behind Shimori Cyber.
Read More →Connect
Need a closer look at the work?
Explore the case studies and technical documentation, or get in touch about opportunities, collaboration and systems work.