Since August, a coalition led by OpenAI has been working to address critical vulnerabilities in PHP, the open-source language that undergirds much of the web, according to The Information. An OpenAI spokesperson said the company briefed several agencies, including the Cybersecurity and Infrastructure Security Agency, about the PHP vulnerability and briefed National Intelligence Director Jay Clayton and senior Defense Department official Emil Michael late last week, describing it as its first "major engagement" with the new Super Intelligence Force. A White House official said the SI Force helped pressure "relevant parties" to deploy a patch. The article also notes OpenAI's "defender's window" framing and cites an Anthropic blog post from late September warning that Chinese lab Z.ai's GLM-5.3 lags U.S. frontier models by about four months, a comparison made by a competing U.S. lab.