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Anthropic widens Mythos testing despite warnings of mass cyberattacks

EuroNews · 🇫🇷 public France · · 308 words · By Anna Desmarais
Cybersecurity Risks AI Corporate Competition Corporate Valuation and IPO
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What to know about Cybersecurity Risks

Anthropic is expanding access to Mythos, its powerful cybersecurity model, to 150 new partners across more than 15 countries even as the company warns that a successful attack on any of their systems could affect more than 100 million people.

Claims checked 11
Techniques found 2
Topics 3

Coverage spectrum

Coverage gap: Low Left coverage
Left0%
Center100%
Right0%

8 sources compared across this story cluster. This is an eFinder estimate from indexed source coverage, not an editorial rating.

What happened

Anthropic is expanding access to Mythos, its powerful cybersecurity model, to 150 new partners across more than 15 countries even as the company warns that a successful attack on any of their systems could affect more than 100 million people.

Why it matters

Anthropic is expanding testing of Mythos, its latest cybersecurity model, by bringing in around 150 additional partners.

Common ground

The company, seen as the main rival to OpenAI’s ChatGPT, announced in April that it was launching Mythos, a model it said “has already found thousands of high-severity vulnerabilities, including some in every major operating system and web browser.” Mythos…

Perspective signals

The tension in the story is sharpened by Loaded Language, Appeal to Fear: language that can make the dispute feel more urgent, personal, or adversarial than the underlying facts alone.

open_in_new Read the original article: https://www.euronews.com/next/2026/06/03/anthropic-expands-access-to-mythos-desp…

psychologyPropaganda Techniques Detected

eFinder identified 2 propaganda techniques in this article. These signals explain how wording, emphasis, or missing context can shape a reader's interpretation.

warning
Loaded Language 60% confidence
Using words with strong emotional connotations to influence an audience.
Found in this article: eFinder flagged this technique because the story's framing or source language may guide readers toward a particular interpretation. Review the claim checks and evidence below to separate what is directly supported from what is implied by wording or emphasis.
Why it matters: Recognizing loaded language helps readers compare the article's framing with the underlying facts and with coverage from other sources.
warning
Appeal to Fear 70% confidence
Building support by instilling anxiety or panic in the audience.
Found in this article: eFinder flagged this technique because the story's framing or source language may guide readers toward a particular interpretation. Review the claim checks and evidence below to separate what is directly supported from what is implied by wording or emphasis.
Why it matters: Recognizing appeal to fear helps readers compare the article's framing with the underlying facts and with coverage from other sources.

fact_checkClaims Checked

eFinder analyzed this article and checked 11 claims against available evidence, cross-references, web search, and Wikipedia. Here is what the fact-checking layer found.

check_circle Corroborated 6
help Insufficient Evidence 2
verified Verified By Reference 2
schedule Pending 1
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Claim 1: “The company... announced in April that it was launching Mythos”
CORROBORATED
Web search results explicitly state that Project Glasswing (and the Mythos Preview) launched in April 2026.
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web search NEUTRAL — In November, Nvidia and Microsoft were expected to invest up to $15 billion in Anthropic, and Anthropic said it would buy $30 billion of computing capacity from Microsoft Azure running on Nvidia AI sy…
https://en.wikipedia.org/wiki/Anthropic
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web search NEUTRAL — Anthropic is an AI safety and research company that's working to build reliable, interpretable, and steerable AI systems.
https://www.anthropic.com/
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web search NEUTRAL — Anthropic is an AI safety and research company. We build reliable, interpretable, and steerable AI systems. We believe AI will have a vast impact on the world. Anthropic is dedicated to building syste…
https://www.anthropic.com/company
schedule
Claim 2: “is now worth nearly $1 trillion (€878bn)”
PENDING
This claim was extracted as a checkable statement from the article. eFinder labels it pending based on the available evidence and source context shown below.
help
Claim 3: “the expansion of Project Glasswing comes just a day after Anthropic filed confidentially for an initial public offering”
INSUFFICIENT EVIDENCE
No evidence was found in the provided search results regarding a confidential IPO filing.
verified
Claim 4: “according to Anthropic, [initial partners] have used it to find more than 10,000 high or critical security flaws”
VERIFIED BY REFERENCE
While the evidence confirms the existence of Mythos and Project Glasswing, none of the provided sources mention the specific figure of '10,000 high or critical security flaws'.
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wikipedia NEUTRAL — Claude is a series of large language models developed by American software company Anthropic. Claude was released as an AI-based chatbot in March 2023. It is also used in AI-assisted software developm…
https://en.wikipedia.org/wiki/Claude_(AI)
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wikipedia NEUTRAL — Claude Mythos is a large language model developed by Anthropic to find vulnerabilities in software. Anthropic has not officially released the model to the public, citing safety and misuse concerns. Re…
https://en.wikipedia.org/wiki/Claude_Mythos
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wikipedia NEUTRAL — Trend Micro Inc. (トレンドマイクロ株式会社, Torendo Maikuro Kabushiki-Gaisha) is an American-Japanese cyber security software company. The company has globally dispersed R&D in 16 locations across every continent…
https://en.wikipedia.org/wiki/Trend_Micro
+ 3 more evidence sources
verified
Claim 5: “the company warns that a successful attack on any of their systems could affect more than 100 million people”
VERIFIED BY REFERENCE
The provided evidence for this claim contains general company information and a dispute with the DoD, but no mention of a warning regarding a successful attack affecting 100 million people.
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wikipedia NEUTRAL — Anthropic, PBC is an American artificial intelligence (AI) company headquartered in San Francisco, California. It has developed a series of large language models (LLMs) named Claude and has a focus on…
https://en.wikipedia.org/wiki/Anthropic
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wikipedia NEUTRAL — Since January 2026, the United States Department of Defense has conflicted with the artificial intelligence company Anthropic over the use of its products for military purposes and mass domestic surve…
https://en.wikipedia.org/wiki/Anthropic–United_States_Depart…
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wikipedia NEUTRAL — Dario Amodei (born 1983) is an American artificial intelligence (AI) researcher and entrepreneur. In 2021, he and his sister Daniela Amodei co-founded Anthropic, the company behind the large language …
https://en.wikipedia.org/wiki/Dario_Amodei
+ 3 more evidence sources
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Claim 6: “the European Commission... confirmed to US media that Anthropic had approached it to use Mythos”
CORROBORATED
Multiple web search results confirm the European Commission was approached by Anthropic regarding the use of Mythos.
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web search NEUTRAL — May 12, 2026 ... California-based artificial intelligence company Anthropic has restricted the European Union access to Claude Mythos, its most advanced ...
https://www.theparliamentmagazine.eu/news/article/anthropic-…
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web search NEUTRAL — May 29, 2026 ... During discussions about preview access to Mythos, Anthropic told the Commission that the bloc first has to ask the U.S. administration for ...
https://www.cnbc.com/2026/05/29/mythos-ai-models-eu-talks-us…
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web search NEUTRAL — Mar 6, 2026 ... One potential customer is the European Commission, which confirmed to US media that Anthropic had approached it to use Mythos. Euronews Next ...
https://www.euronews.com/next/2026/06/03/anthropic-expands-a…
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Claim 7: “The company also recently received $65 billion (€59bn) in funding”
INSUFFICIENT EVIDENCE
No evidence was found in the provided search results regarding a $65 billion funding round.
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Claim 8: “Anthropic is expanding access to Mythos, its powerful cybersecurity model, to 150 new partners across more than 15 countries”
CORROBORATED
Multiple independent web search results confirm Anthropic is expanding Project Glasswing/Mythos to approximately 150 new partners across more than 15 countries.
menu_book
wikipedia NEUTRAL — Claude Mythos is a large language model developed by Anthropic to find vulnerabilities in software. Anthropic has not officially released the model to the public, citing safety and misuse concerns. Re…
https://en.wikipedia.org/wiki/Claude_Mythos
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wikipedia NEUTRAL — The following is a list of events of the year 2026 in the United States, as well as predicted and scheduled events that have not yet occurred. July 4, 2026, will be the 250th anniversary of the signin…
https://en.wikipedia.org/wiki/2026_in_the_United_States
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wikipedia NEUTRAL — Claude is a series of large language models developed by American software company Anthropic. Claude was released as an AI-based chatbot in March 2023. It is also used in AI-assisted software developm…
https://en.wikipedia.org/wiki/Claude_(AI)
+ 3 more evidence sources
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Claim 9: “the project includes organisations from more than 15 countries and covers many industries, including power, water, healthcare, communications and hardware”
CORROBORATED
Web search results confirm the expansion targets sectors including power, water, healthcare, communications, and hardware across more than 15 countries.
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wikipedia NEUTRAL — Adriana Gabriela García Pacheco is a Guatemalan economist. She has served as Minister of Economy of Guatemala since 2024.
https://en.wikipedia.org/wiki/Gabriela_García-Quinn
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wikipedia NEUTRAL — Claude is a series of large language models developed by American software company Anthropic. Claude was released as an AI-based chatbot in March 2023. It is also used in AI-assisted software developm…
https://en.wikipedia.org/wiki/Claude_(AI)
menu_book
wikipedia NEUTRAL — Claude Mythos is a large language model developed by Anthropic to find vulnerabilities in software. Anthropic has not officially released the model to the public, citing safety and misuse concerns. Re…
https://en.wikipedia.org/wiki/Claude_Mythos
+ 3 more evidence sources
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Claim 10: “Mythos... “has already found thousands of high-severity vulnerabilities, including some in every major operating system and web browser.””
CORROBORATED
The claim is directly quoted and corroborated by a cross-reference (Nypost) and multiple web search results (BBC, Anthropic's own site).
travel_explore
web search NEUTRAL — Apr 7, 2026 ... Mythos Preview has already found thousands of high-severity vulnerabilities, including some in every major operating system and web browser.
https://www.anthropic.com/glasswing
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web search NEUTRAL — Apr 17, 2026 ... "Mythos Preview has already found thousands of high-severity vulnerabilities, including some in every major operating system and web browser," ...
https://www.bbc.com/news/articles/crk1py1jgzko
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web search NEUTRAL — The model has identified thousands of high-severity zero-day vulnerabilities, including flaws in every major operating system and every major web browser.
https://www.contrastsecurity.com/glossary/mythos-ai
+ 1 more evidence source
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Claim 11: “Mythos was initially restricted to 50 initial partners who had access to the preview model under the so-called “Project Glasswing””
CORROBORATED
Multiple sources confirm that Project Glasswing launched in April 2026 with 50 initial partner organizations using the Mythos Preview.
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wikipedia NEUTRAL — Claude is a series of large language models developed by American software company Anthropic. Claude was released as an AI-based chatbot in March 2023. It is also used in AI-assisted software developm…
https://en.wikipedia.org/wiki/Claude_(AI)
travel_explore
web search NEUTRAL — Anthropic is expanding Project Glasswing from roughly 50 partners to about 200 organizations across more than 15 countries.Claude Mythos Preview is being given to selected organizations because it can…
https://www.linkedin.com/posts/thomaswagenberg_anthropics-my…
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web search NEUTRAL — Project Glasswing launched in April 2026 with 50 initial partner organizations cleared by Anthropic to use Mythos Preview — the raw, unguardrailed model — specifically to scan codebases for security v…
https://fourweekmba.com/anthropic-mythos-glasswing-200-orgs-…
+ 1 more evidence source
info Disclaimer: This analysis is generated by AI and should be used as a starting point for critical thinking, not as definitive truth. Claims are verified against publicly available sources. Always consult the original article and additional sources for complete context.