This technical post walks through the design and implementation of Secure Playground: a local web app that simulates prompt-injection attacks against large language models and demonstrates simple defenses. Provide a minimal, reproducible environment to test payloads and defensive strategies. Make it easy to add new providers and run mutation-based red-team experiments. Offer a leaderboard and scor
If you want the failure-mode and testing path through the catalog, start here. Recommended route: Service Worker Failure Modes in Offline-First PWAs Rollback Patterns in Offline-First PWAs Testing IndexedDB Schema Migrations in Offline-First PWAs Offline Queue Replay and Idempotency in Offline-First PWAs If you want privacy-first, offline health tech to exist without surveillance funding it: spons
In recent months, a peculiar behavior observed in Visual Studio Code (VS Code) has sparked discussions among developers: the automatic insertion of the phrase “co-authored by Copilot” in the code comments, even when GitHub Copilot is not actively used by the developer. This phenomenon raises essential questions regarding code attribution, developer productivity, and the implications of AI-assisted
Book: The Complete Guide to Go Programming Also by me: Thinking in Go (2-book series) — Complete Guide to Go Programming + Hexagonal Architecture in Go My project: Hermes IDE | GitHub — an IDE for developers who ship with Claude Code and other AI coding tools Me: xgabriel.com | GitHub You write a validation function. Five rules. Email format, password length, age range, country code, ter
Metasploitable2 - FTP Exploitation using vsftpd 2.3.4 Backdoor 1. Objective To identify and exploit a known vulnerability in an FTP service running on a vulnerable target machine using industry-standard reconnaissance and exploitation techniques. 2. Lab Environment Component Description Attacker Machine Kali Linux Target Machine Metasploitable2 Network Type Host-only / NAT
Ledgers are the heartbeat of any financial companies, fintech or old school financial. Not the API gateway, not the mobile app, not the underwriting model. The ledger Banks have known this for centuries. Fintechs sometimes need to rediscover it the hard way. On fintech world Revolut runs multi-currency, multi-product financial infrastructure across 35+ countries. Stripe moves money and extends c
So far, we’ve seen: The model decides what to do The MCP server executes it But something is missing. Who actually connects these two? That’s the MCP client. The MCP client is: The component that connects the model and the MCP server, and manages the entire interaction between them. It’s easy to think: “The model calls the server directly” But that’s not what happens. 👉 The model only generates i
There are two sections to this. In the first section, I discuss what squad is, why it might be useful to learn, and Coding is solved, apparently. If you're a software engineer and you've been using coding agents for a while, The work has certainly changed. For most code changes, it's easier just to ask an agent to do it and you might even worry you're going too slow if you don't. For a lot of us,