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Security hot issue: Leading AI firms step up security push in round two

Moves by leading AI model developers to expand into cybersecurity are gathering pace. Anthropic has rolled out Claude Code Security and an automated code review feature to help block errors and vulnerabilities. OpenAI has unveiled the Codex Security application security agent and announced an acquisition of AI security startup Promptfoo. The article also lists other corporate moves in Korea and abroad, funding rounds, and policy work on security and privacy certification.