Anthropic widened Project Glasswing to around 150 more organisations across more than fifteen countries, bringing in sectors that had been thinly represented — power, water, healthcare, communications, hardware. Many maintain codebases in wide use; a successful attack on one of them, the company estimated, could affect more than 100 million people. The fifty or so partners who had been in since April had by then run Claude Mythos Preview against their own code and found more than 10,000 high- or critical-severity flaws. It put a number on how far April's arrangement — withholding the model from general release and handing it only to defenders — had actually reached.