Anthropic’s Claude Code Security: Cybersecurity stocks dropped up to 11% on February 23, 2026, after Anthropic launched Claude Code Security. The AI-powered code security tool scans entire codebases. It detects software vulnerabilities. It prioritizes critical risks. It recommends patches for developers. Over 500 hidden flaws were found in open-source projects. Investors fear AI disruption in cybersecurity markets. The sell-off highlights rising anxiety over AI-driven vulnerability detection reshaping enterprise software.