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LLMs become core security infrastructure as post-quantum cryptography gains traction

LLM-based AI is taking on a bigger role in corporate security technology stacks, with model developers and security vendors expanding cyber-focused deployments. OpenAI outlined plans to broaden access to its GPT-5.4-Cyber model for verified users, while Anthropic is limiting access to its Mythos Preview. Security firms and the government are also moving to address AI-driven hacking risks. Separate efforts to develop post-quantum cryptography are becoming more concrete.