Jumper joins Anthropic, AI's music sources, Whittaker on chatbots - June 21, 2026
John Jumper jumps to Anthropic, AutoJack hijacks AI agents, North Korea poisons the Mastra packages, and Secure Boot's clock runs out - your June 21 rundown.(0:00) - Intro(0:21) - Nobel laureate John Jumper leaves DeepMind for Anthropic - source(1:08) - The Atlantic maps the music used to train AI - source(2:00) - Signal's Meredith Whittaker: AI chatbots are not your friends - source(2:44) - A field guide to building reliable agentic AI - source(3:31) - AutoJack: a web page that can hijack an AI agent - source(4:19) - Microsoft ties Mastra AI package attack to North Korea - source(5:08)…
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