Anthropic expands Claude Mythos access to 200 partners across critical infrastructure worldwide

Reviewed byNidhi Govil

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Anthropic is scaling Project Glasswing to roughly 200 organizations across more than 15 countries, granting access to its Claude Mythos AI model for identifying critical software vulnerabilities. The expansion comes amid fierce competition from OpenAI's GPT-5.5 Cyber and includes power, water, healthcare, and telecom companies whose codebases could affect over 100 million people if compromised.

Anthropic Scales Project Glasswing to 200 Partners Worldwide

Anthropic is expanding Project Glasswing, its joint industry initiative to find and fix critical software vulnerabilities using AI, to about 150 new organizations across more than 15 countries, bringing the total to roughly 200 partners

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. The announcement comes just one day after Anthropic filed confidentially for an initial public offering (IPO) following a $65 billion funding round at a nearly $1 trillion valuation

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At the heart of this expansion is Claude Mythos, which Anthropic dubbed its most powerful AI model yet, capable of identifying thousands of zero-day vulnerabilities over several weeks

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. In early April, Anthropic gave 50 initial partners, including the U.S. government, access to the Mythos Preview model to scan their codebases for security flaws

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Source: Digit

Source: Digit

Critical Infrastructure Organizations Join the Initiative

The expanded list of organizations with access to Claude Mythos now covers critical infrastructure sectors including power, water, healthcare, communications, and hardware—industries that weren't well-represented in Anthropic's initial cohort

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. Many of these new partners are companies or nonprofits that maintain software infrastructure which other organizations and governments rely upon

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"What each partner has in common is that a successful attack on their codebase could be catastrophic," Anthropic said. "For most partners, we estimate that a major attack could affect more than 100 million people, with important ramifications for both global and national security"

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The expanded group includes organizations in countries friendly to the U.S., including Australia, Canada, France, Germany, Italy, Switzerland, the Netherlands, Spain, Belgium, Sweden, India, Japan, New Zealand, and South Korea

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. Specific organizations granted access include U.S.-based identity and security management tool Okta, South Korean companies Samsung, SK Hynix, and SK Telecom, NATO, and the EU's cyber security agency Enisa

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Source: CXOToday

Source: CXOToday

OpenAI Competition Intensifies with GPT-5.5 Cyber

The expansion comes as OpenAI competition heats up in the AI for cybersecurity space. Since Anthropic released Claude Mythos, rival OpenAI released its own cybersecurity-focused model GPT-5.5 Cyber, which it has rolled out to a large group of partners for testing

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. UK banks, notably excluded from Project Glasswing, are set to receive access to OpenAI's GPT-5.5 Cyber instead

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HSBC, Lloyds Banking Group, and Nationwide will be among the financial institutions to receive access to GPT-5.5 Cyber, while NatWest and Santander have already been testing it as part of separate agreements

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. OpenAI offered nine UK banks access to its Mythos-rival model in total after they were snubbed from Glasswing

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Mixed Results and Security Concerns

Anthropic's partners have found more than 10,000 security flaws they considered highly or critically severe using the Mythos Preview model

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. However, some industry experts have said fears of unfettered hacking have been overstated

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Those who have tested the Mythos Preview model report mixed results. Cloudflare CISO Grant Bourzikas wrote in May that the model represented "a real step forward" and was able to find a series of low-severity bugs and chain them into working exploits

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. Others, such as cURL's Daniel Stenberg, called Mythos Preview "an amazingly successful marketing stunt" after it found just one vulnerability in the data transfer software

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Source: Gizmodo

Source: Gizmodo

Race Against Time Before Wider AI Availability

Anthropic has said it expects other AI companies to soon develop models as capable as Mythos Preview, which is why the firm is racing to establish safeguards within Project Glasswing

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. The startup aims to bolster software infrastructure before AI this powerful is widely available from other providers, a prospect that is no more than six to 12 months away

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Goldman Sachs CEO David Solomon said at an economic event that information about these models should be shared more broadly among companies, while emphasizing the need for guardrails, as open-source models can quickly do the same things. "They're very, very powerful models," he said

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Anthropic says it's working "as quickly as we can to safely release Mythos-level capabilities" to the public, but won't make the model widely available until it implements "highly robust safeguards" to prevent potential misuse of its cyber capabilities

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. The company has said it aims to bring Mythos-class models to all its customers, with additional safeguards, in the coming weeks

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