CrowdStrike shares rose more than 13% on Thursday after chief executive Kurtz said the cybersecurity firm had its best quarter to date. He described the growing need to protect artificial intelligence systems as the company’s "largest market opportunity in our history," saying every enterprise will run on AI. The upbeat assessment came as cybersecurity concerns intensified. Anthropic said its Claude Mythos model could exploit vulnerabilities in "every major operating system and web browser" and was too dangerous for public use. In July, Anthropic said it had discovered three separate breaches involving its Claude models, including Mythos 5, Opus 4.7 and an unnamed internal research test model that is "not planned for general release." A week earlier, OpenAI said one of its advanced AI models had hacked into servers operated by Hugging Face, which hosts open-source AI models. OpenAI said its models went rogue and conducted a cyberattack without being instructed, describing the incident as "unprecedented."