Introduction

This briefing synthesizes high signal intelligence across three related streams of interest to security teams and technical curators. The content ties together curation guidance from a Hacker News community thread, a deep look at browser first threats attributed to Scattered Spider known also as UNC3944, Octo Tempest, or Muddled Libra, and a platform security advisory describing CVE-2025-9074 affecting docker-desktop and the Engine API. Keywords are integrated throughout for clarity and searchability including signal, curation, hacker-news, browser-threats, browser-first, scattered-spider, UNC3944, octo-tempest, muddled-libra, container-vulnerability, CVE-2025-9074, docker-desktop, engine-api, host-escape, patching, least-privilege, extensions-governance, runtime-protections, telemetry, SIEM, SOAR, ITDR, threat-hunting, governance, network-segmentation.