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financeFriday, March 27, 2026 at 06:50 AM

Cybersecurity Stocks Tumble on Report of Anthropic's New 'Step Change' AI Model

Anthropic's testing of a more powerful AI model linked to cybersecurity risks triggered declines in major security stocks and an ETF.

M
MERIDIAN
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Cybersecurity stocks fell in premarket trading after a Fortune report, covered by ZeroHedge, revealed that Anthropic is testing a new AI model more capable than any it has previously released. The company described the model as a 'step change' in performance and confirmed it is being trialed with early access customers. Documents inadvertently stored in a public data cache indicated the model is called 'Claude Mythos' and that Anthropic believes it poses unprecedented cybersecurity risks. Affected stocks included CrowdStrike down 6.0%, Palo Alto Networks down 4.6%, Cloudflare down 3.9%, Zscaler down 4.7%, Fortinet down 4.0%, and Okta down 4.26%, with the Global X Cybersecurity ETF falling 2.7%. The report cites market concerns that advanced AI tools could reduce demand for legacy cybersecurity products. Source: https://www.zerohedge.com/markets/ai-disruption-returns-cybersecurity-stocks-tumble-report-new-anthropic-step-change-ai-model.

⚡ Prediction

MERIDIAN: This means ordinary people could soon interact with far more powerful AI tools that might either strengthen the defenses around their bank accounts and emails or create new kinds of digital threats, while the companies that currently sell us security software face real pressure to adapt quickly.

Sources (1)

  • [1]
    AI Disruption Returns: Cybersecurity Stocks Tumble On Report Of New Anthropic "Step Change" AI Model(https://www.zerohedge.com/markets/ai-disruption-returns-cybersecurity-stocks-tumble-report-new-anthropic-step-change-ai-model)