Observed Signal · Feb 23, 2026 · Technical Release · Source: CNBC Technology · Impact: 3/5 · Sentiment: Negative
Cybersecurity Stocks Plummet Amid AI Disruption Fears
Cybersecurity stocks fell for a second day after Anthropic released a limited research preview of a new security capability for its Claude model that can scan software code for vulnerabilities and suggest fixes. Investors sold shares in major security vendors — including CrowdStrike, Zscaler, Netskope, Tenable, SailPoint, Okta, SentinelOne, Fortinet, Palo Alto Networks and Cloudflare — and cybersecurity ETFs also slid. Anthropic said it will host an enterprise briefing with new product announcements, intensifying market concern that AI tools could automate portions of traditional security workflows. Executives at CrowdStrike and Palo Alto defended their platforms, while Bank of America analysts said the Anthropic tool mainly threatens code‑scanning specialists such as GitLab and JFrog rather than end‑to‑end security platforms.
A new AI capability from a leading model provider that automates code‑scanning triggered broad market selling across major cybersecurity vendors, indicating potential disruption to incumbent security workflows and vendor revenue — a moderate industry impact that warrants monitoring.
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Key Takeaways & Evidence Grounding
- Anthropic debuted a new security tool for its Claude model in a limited research preview that can scan code for vulnerabilities and suggest solutions.
- Cybersecurity vendors saw notable share declines: CrowdStrike and Zscaler down ~10% each; Netskope and Tenable down ~12%; SailPoint down 9%; Okta down >6%; SentinelOne and Fortinet down >4%; Palo Alto Networks down ~3%; Cloudflare down >9%.
- iShares Cybersecurity & Tech ETF dropped about 5% and the Global X Cybersecurity ETF fell to its lowest level since November 2023.
- Anthropic scheduled an enterprise briefing with new product announcements following the preview.
- Bank of America analysts said the Anthropic tool poses the greatest threat to code‑scanning platforms such as GitLab and JFrog, which fell 8% and 25%, respectively, on Friday.
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Anthropic Tests 'Mythos' LLM; Cyber Stocks Drop
Cybersecurity stocks fell after reports that Anthropic is testing a new, more powerful artificial intelligence model called Mythos with enhanced cyber capabilities and attendant security risks. Fortune reported the item citing a publicly accessible draft blog post; CNBC said Anthropic did not immediately respond to a request for comment. The company reportedly plans a slow rollout because of potential cybersecurity implications. The market reaction included a 4.5% decline in the iShares Cybersecurity ETF and share drops of roughly 6% for CrowdStrike, Palo Alto Networks and Zscaler, with larger moves at Okta, Netskope and Tenable. The story highlights ongoing industry concern about how advanced LLMs and autonomous agents change the threat landscape and pressure cybersecurity vendors to respond to more sophisticated attack tools.
Cybersecurity Stocks Rally After IBM AI Cyber-Fears Warning
Cybersecurity stocks jumped after IBM CEO Arvind Krishna said cybersecurity fears were a top priority for customers in the company's preliminary second-quarter results. Krishna told CNBC that some major deals were put on hold toward the end of the quarter as businesses rethink spending, and he said customers shifted spending to servers and memory. The rise of advanced AI models — notably Anthropic's Mythos — has increased anxiety on Wall Street about more sophisticated cyberattacks. Security vendors including Okta, Netskope, CrowdStrike, SailPoint, Zscaler, SentinelOne and Palo Alto Networks saw notable share gains following the comments.
Wall Street: AI Boosts Cybersecurity Stocks
Wall Street analysts are reframing AI as a tailwind for cybersecurity companies, citing increased demand for security as AI systems expand attack surfaces. Mizuho upgraded CrowdStrike to outperform and raised its price target to $520, citing healthy platform demand and strong AI security offerings. JPMorgan identified CrowdStrike and Palo Alto Networks as likely beneficiaries of threats tied to foundation models and agentic AI. The article notes partnerships such as Anthropic’s Project Glasswing (which named CrowdStrike and Palo Alto as partners) and highlights product and sales catalysts like CrowdStrike’s Falcon Flex and hyperscaler demand. Jim Cramer and his Investing Club hold both names (CrowdStrike rated strongly; Palo Alto rated a 3 to trim into strength). Stock moves and ETF exposures (IGV software ETF) suggest investor sentiment is shifting toward viewing AI as increasing security spend rather than stealing market share.
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