https://newo-j.github.io/tags/systems-design/ Recent content in Systems-Design on Jonah Owen Hugo en-gb Thu, 13 Aug 2026 00:00:00 +0000 https://newo-j.github.io/projects/micorosft_defender_clone/ Thu, 13 Aug 2026 00:00:00 +0000 https://newo-j.github.io/projects/micorosft_defender_clone/ <figure class="fig" style="--fw:70%"> <img src="https://newo-j.github.io/images/defenderclone.png" alt="Architecture Diagram" width="1174" height="742" loading="eager" decoding="async"> </figure> <p>Microsoft Defender&rsquo;s &ldquo;Attack Story&rdquo; feature uses a graph comprised of nodes and relationships (edges) to visually represent the path of a security incident. Microsoft uses their own proprietary graphing engine as well as AI to achieve this, but this week I built a simpler clone using NEO4J, an open-source graphing database.</p> <figure class="fig" style="--fw:80%"> <img src="https://newo-j.github.io/images/passwordspraydemo.png" alt="Password Spray Demo" width="1915" height="867" loading="lazy" decoding="async"> </figure> <h2 id="tech-stack">Tech Stack</h2> <ul> <li><strong>ALL</strong>: Docker</li> <li><strong>Auth Frontend</strong>: Nginx, Javascript, HTML</li> <li><strong>Auth Backend</strong>: Python, FastAPI, PostgreSQL</li> <li><strong>Dashboard Frontend</strong>: Nginx, Javascript, HTML, CSS, Vis.js</li> <li><strong>Dashboard Backend</strong>: Neo4j, Python, FastAPI</li> <li><strong>Neo4j Connector</strong>: Kafka, Python, Neo4j</li> <li><strong>Policy Engine</strong>: Kafka, Python</li> </ul> <h2 id="authentication">Authentication</h2> <p>I started by designing a very simple service to which a user could authenticate to.</p>