“AI恐慌”出现，美股网络安全概念集体跳水

Market Overview - On February 20, US stock indices opened lower but rebounded during the day, with the Dow Jones up 0.23%, Nasdaq up 0.93%, and S&P 500 up 0.54% [1] Technology Sector - Major tech stocks showed mixed performance, with Google rising by 3.5% following the release of its new foundational model, Gemini 3.1 Pro, which has doubled the inference performance compared to the previous version released in November [3] - The Nasdaq China Golden Dragon Index also opened lower but turned positive, currently up 0.06% [3] Cybersecurity Sector - Cybersecurity stocks experienced a significant decline, with SailPoint down 9.44%, Okta down 9.18%, Cloudflare down 8.05%, Crowdstrike down 7.95%, and Zscaler down 5.47% [3] - The Global X Cybersecurity ETF fell nearly 5%, marking its lowest closing record since November 2023 [3] New AI Tools in Cybersecurity - Anthropic PBC launched a new AI tool, Claude Code Security, designed to scan code repositories for vulnerabilities and suggest fixes. This tool can read code like a human security researcher and identify subtle logical flaws often missed by traditional scanners [3][4] - During internal testing, the Claude Opus 4.6 model identified over 500 vulnerabilities in production open-source code repositories, which had evaded detection for decades [4] Market Sentiment - Concerns have arisen among investors regarding the potential impact of AI-native tools on existing enterprise security suites, as these tools shift the focus from passive monitoring to proactive automated remediation [5] - Dennis Dick from Triple D Trading noted a stable sell-off in the software sector, with cybersecurity stocks experiencing a mini flash crash due to the news about Anthropic PBC's findings [5]