What is Anthropic’s Claude Code Security and how does it work - why did cybersecurity stocks fall after the launch?

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.

Claude Code Security: Anthropic is now using AI to find flaws in software

India, Feb. 21 -- US-based AI company Anthropic has unveiled Claude Code Security, a new feature within its web-based Claude Code platform designed to detect and fix software vulnerabilities.