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California subpoenas OpenAI over AI cybersecurity incidents
Attorney General Rob Bonta served an investigative subpoena on September 30 as part of California's inquiry into cybersecurity incidents and risks involving OpenAI's models. The state is investigating the Hugging Face incident and asking OpenAI further questions about its models. ·
Why it mattersCalifornia is examining whether OpenAI should face legal accountability for cyber risks involving its models.
Also
UK AISI resumes most evaluation activity under new controls
After pausing its highest-risk cyber evaluations in August, the institute says it has resumed most evaluation activity this week. It disabled internet access for agentic cyber tests and added layered network blocks, live monitoring and checks before runs begin.
Why it mattersEvaluators can resume much of their testing while checking for unintended agent actions before they reach external systems.
Judge dismisses Chegg and Penske antitrust suits over Google's AI search
On September 30, a federal judge dismissed both companies' complaints after finding their antitrust allegations insufficient.
Why it mattersThe ruling closes these publishers’ current antitrust route to compensation for content used in AI search. · ·.
fingfx.thomsonreuters.com — court order · Reuters · Ars Technica
Broadcom agreed to lend Anthropic up to $42 billion for infrastructure
Reuters found the financing agreement in Anthropic's IPO prospectus; the facility could cover part of Anthropic's TPU leases.
Why it mattersAnthropic's chip supplier would also be a financing partner, a combination Anthropic says creates potential conflicts over access to computing power.
Research worth a look
Researcher describes Claude-assisted science across fields
In an Anthropic-hosted guest essay, physicist Matthew Schwartz describes building BootLoops with Claude for quantitative research and working with domain experts to judge which results matter.
Tools & releases
Ai2 releases Olmo-core 3 MoE training framework
Ai2 published an open training stack for mixture-of-experts models, with code and a technical report; researchers can use it to train their own MoEs.
Limited coverage: Some feeds and listing pages were unavailable; the selected reporting also leans heavily on Reuters.