ChainThink report, February 24: Since Anthropic launched Claude Code Security last Friday, the stock prices of several top publicly listed cybersecurity firms have declined. Claude Code Security is an AI-driven code vulnerability scanning tool, released on February 20 in a limited research preview edition.

According to Anthropic's official website, its chatbot Claude can "scan entire codebases for vulnerabilities, validate each finding to minimize false positives, and provide remediation suggestions ready for review and approval." Claude’s reasoning process on code "mirrors that of a seasoned security researcher," capable of understanding context, tracking data flows, and "identifying vulnerabilities missed by pattern-matching tools," before proposing fixes.

This week, the market capitalizations of the five largest U.S. information technology security companies all experienced sustained significant declines. The U.S.'s largest cybersecurity firm, Palo Alto Networks, with a market cap of $116 billion, has seen its stock drop nearly 9% since the feature's launch. CrowdStrike, which provides endpoint security, threat intelligence, and cyberattack response services, suffered a larger loss—its stock plummeted 18% since February 20, erasing $20 billion in market value. Meanwhile, according to Google Finance data, Fortinet, headquartered in California, saw its stock fall 9% during the same period. Other leading cybersecurity firms, such as Cloudflare and Zscaler, also witnessed stock declines due to this new AI-powered competitor.