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Sourced AI briefs in publish order — newest first. Citeable originals live on the homepage under From Signal Desk.

AISep 18, 2026TechCrunch

Researchers used Anthropic’s Claude to hack into OpenAI

Hacktron AI used Claude—Opus 5 after Opus 4.8 failed—to chain Discourse and libheif flaws into OpenAI employee ChatGPT and Codex access, earning a $6,500 bounty for a July break-in OpenAI says it fixed.

AISep 18, 2026Google AI Blog

New experts join Google’s AI & Economy team

Google expands its AI & Economy program with Nobel laureate Philippe Aghion, Ajay Agrawal, and directors Anu Madgavkar and Daniel Rock—pairing ATLAS adoption data with heavier academic firepower on work, growth, and diffusion.

AISep 18, 2026Ars Technica

Researchers used Claude to hack OpenAI

Ars (via Financial Times) adds that Hacktron’s Claude-assisted break-in reached an employee ChatGPT account with GitHub code access—and lands as Anthropic says Claude now leads 26% of its R&D work, up from 1% in March.

AISep 18, 2026MIT Technology Review

Could AI really kill us all? Your questions, answered.

MIT Technology Review’s Heaven and Huckins answer Roundtables questions on extinction risk, alignment, autonomy, and regulation—splitting on whether AI could kill everyone while agreeing present harms and fragile controls are already real.

AISep 17, 2026TechCrunch

Google DeepMind launches institute to widen the AGI debate

DeepMind Institute opens with Legg, Manyika, and Hassabis as directors—four essays on AGI economics, readable reasoning, flourishing, and a U.S.-led frontier standards body that could ratchet toward coordinated slowdowns.