Mythos AISI incident, OpenAI offline training, Quest Diagnostics breach - October 24, 2026
Anthropic dissects how Mythos 5 targeted real developers in a UK safety test, OpenAI cuts frontier training off the live internet, and breaches hit Quest Diagnostics and Capcom.
Chapters
Intro
An alignment assessment of the UK AISI cybertesting incident
https://www.anthropic.com/research/alignment-assessment-ukaisiOpenAI says it will no longer train its AI models on the live internet, citing significant risks
https://techcrunch.com/2026/10/23/openai-says-it-will-no-longer-train-its-ai-models-on-the-live-internet-citing-significant-risks/Lab testing giant Quest Diagnostics confirms patients' personal and health data was compromised during breach
https://techcrunch.com/2026/10/23/lab-testing-giant-quest-diagnostics-confirms-patients-personal-and-health-data-was-compromised-during-breach/Microsoft 365 accounts compromised at 79 organizations, no passwords needed
https://www.helpnetsecurity.com/2026/10/23/microsoft-365-accounts-stolen-sessions/Capcom data breach exposes 11.7 million account records
https://www.helpnetsecurity.com/2026/10/23/capcom-id-data-breach-11-million-records-exposed/nginx RCEs CVE-2026-93479, CVE-2026-15176
https://seclists.org/oss-sec/2026/q4/362Introducing Kimi K3.1 Pro
https://simonwillison.net/2026/Oct/23/kimi-k31-pro/Dessa: Conversation Model trained only on speech
https://block.xyz/dessaAgent cloud startup Daytona hits $1B valuation backed by FirstMark and a who's who of angels
https://techcrunch.com/2026/10/23/agent-cloud-startup-daytona-hits-1b-valuation-backed-by-firstmark-and-a-whos-who-of-angels/UK proposes 14-year jail terms for subsea cable saboteurs
https://www.helpnetsecurity.com/2026/10/23/uk-undersea-cable-sabotage-sentences/Sign-off