From Pull Requests to Reproducible Interoperability: Building an Evidence-First Contributor Network
From Pull Requests to Reproducible Interoperability: Building an Evidence-First Contributor Network Open source collaboration becomes much more usef…
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IEC 61850 Security Research: From SCL and MMS to GOOSE, Sampled Values, and the Process Bus
By RUGERO Tesla ( @404Saint ). IEC 61850 is another one of those protocols that becomes more interesting the deeper you go. At first glance, it look…
Building a C++ HTTP Server from Scratch (Part 1): Setting Up TCP Sockets
Introduction In this series I will be going through how to build an HTTP Server from scratch in C++ using POSIX APIs, and actually have it serve a w…
Beyond Cyclic Polling: Objects, Classes, and Outstation State in DNP3
By RUGERO Tesla ( @404saint ) If you approach DNP3 (Distributed Network Protocol 3) from a background in Modbus/TCP or EtherNet/IP (CIP), your menta…
QUIC-Based NAT Traversal: How PUNCH_ME_NOW Frames Are Standardizing Hole Punching
TL;DR: NAT traversal has historically relied on STUN/TURN/ICE running as an external signalling layer bolted onto whatever transport protocol you ch…
Abandoning Abstractions: Manually Crafting EtherNet/IP Packets Almost Broke Me
By RUGERO Tesla ( @404Saint ). There is a persistent illusion in Industrial Control Systems (ICS) security research: that high-level libraries, abst…
Stage 1.6 — Network Devices
From Zero to Cybersecurity Professional | Complete Roadmap Series Series: Cybersecurity × OT/ICS Security — Full Roadmap Stage: 1 — Network Fundamen…
Create and configure network security groups
Introduction Want to ensure your web infrastructure is tightly controlled and protected against unauthorized traffic? In this hands-on lab breakdown…
Anthropic Named Their Models After Poetic Forms. I Think They Accidentally Mapped the Human Brain.
A 3am theory about cognitive architecture, Kahneman, and why I always reach for Sonnet. Kahneman's Two Systems Daniel Kahneman spent decades studyin…
From the Perspective of a 20-Year Architect: My Own System's Security
Even though I've been immersed in systems for twenty years, I never thought a security incident on my own server would make me sweat this much. I'm…
Wireless Networks
A wireless network is a communication system that uses radio waves or other wireless signals to connect devices together. This enables them to commu…
Internet Architecture
Internet Architecture describes how data is organized, transmitted, and managed across networks. Different architectural models serve different need…
I have no idea what my AI agents are doing right now. Here is how I fixed that.
There is a specific kind of anxiety that comes with running autonomous AI agents in production. You deploy them, they start working, and then you ha…