El Solitario | Tech, Cybersecurity, AI and Digital Culture

Diagram of AI agent containment in a sandboxed environment

Security

AI Agent Containment: What It Is and How It Works

OpenAI called the Hugging Face hack an unprecedented incident, then rebranded it as misaligned behavior. Security experts say it was actually a misconfigured containment setup: here’s what that means, how it works, and which concrete practices support it.

By Clara Vásquez, 2 hours14 October, 2026 ago

Diagram of HTTP connection reuse between a client and a server

Programming

HTTP connection reuse in Go: how it works

The same Go program can become five times slower just because it doesn’t read an HTTP response body. We explain why HTTP/1 breaks connection reuse so easily, and how Go 1.27 fixes it.

By Andrés Morales, 7 hours14 October, 2026 ago

Iosevka monospace font for coding

Programming

Iosevka: What It Is and How to Customize Your Monospace Font

Iosevka is an open source monospace font with 146 configurable characters and 19 alternate styles. This guide explains how it works, when it makes sense over alternatives like Fira Code or JetBrains Mono, and how to compile your own variant with Node.js.

By Andrés Morales, 14 hours14 October, 2026 ago

Gemini 4 Argon, the Google DeepMind model applied to software engineering

Artificial Intelligence

Gemini 4 Argon: Google Says It Speeds Up xTB by Up to 2.3x

Google DeepMind reports that Gemini 4 Argon sped up the quantum chemistry software xTB by 2.3x, helped migrate 6 million lines of legacy code in Chrome, and cut session preparation time by 40% in the Agent Development Kit. The results, published by Google, show the model applied to real software engineering, not just benchmarks.

By Andrés Morales, 20 hours14 October, 2026 ago

Firefox Enterprise policies panel configured with policies.json

Tech News

Firefox Enterprise: How to Manage policies.json

Firefox Enterprise policies let you configure, block, and audit the browser across an entire company through a single policies.json file. This guide explains how the engine that applies them works, which paths each operating system uses, and how to write the most common directives step by step.

By Andrés Morales, 1 day13 October, 2026 ago

Conceptual diagram of Anthropic Scion, the system that replaces Git

Artificial Intelligence

Anthropic Migrates from Git to Scion: From 2,500 to 30,000 Daily Merges

Anthropic migrated its entire monorepo from Git to Scion, an in-house version control system, after daily code merges rose from 2,500 to over 30,000 between May and September 2026. The migration took five months and addresses the limitations of Git’s decentralized design in an environment where nearly every client is an always-connected AI agent.

By Andrés Morales, 1 day13 October, 2026 ago

GLM Legal, Z.ai's artificial intelligence model for lawyers

Tech News

Z.ai Introduces GLM Legal, an AI Model for Law

Z.ai introduced GLM Legal, a variant of its GLM model family built for legal tasks like contract drafting and regulatory queries. The company promises fewer citation hallucinations, the problem that has already gotten lawyers sanctioned for using generic AI in real courtrooms.

By Andrés Morales, 2 days13 October, 2026 ago

Diagram of OT/IoT security in a connected industrial network

Security

OT/IoT Security: What It Is and How to Shield Your Infrastructure

A cyberattack forced refrigerators at several European supermarkets to defrost uncontrollably. The incident exposes how OT/IoT security works in critical infrastructure and which practices keep a connected device from ending up under an attacker’s control.

By Clara Vásquez, 2 days13 October, 2026 ago

Codex CLI daemon running in the background in a terminal

Tech News

Codex CLI Ships a Persistent Daemon Without Warning in 0.157.0

Since version 0.157.0, opening a Codex CLI session activates a persistent daemon that auto-updates every hour and survives closing the terminal. GitHub issue #48195 asks for that behavior to be opt-in, while several developers confirm failures when trying to fully disable it.

By Andrés Morales, 2 days12 October, 2026 ago

Conceptual illustration of browser fingerprinting and device tracking

Tech News

Browser Fingerprinting: What It Is and How It Works

Browser fingerprinting identifies your device by combining GPU, audio, and installed font signals, without using cookies. Neither clearing your history nor connecting to a VPN disables it, because neither one touches your hardware. We show you how it works under the hood and what real settings actually reduce how much it gives you away.

By Andrés Morales, 3 days12 October, 2026 ago