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EU's cybersecurity agency granted access to Mythos 5 AI model, Commission says

The agency will assess frontier models for cybersecurity risks after months of negotiations and pressure from lawmakers over AI hacking tools.

  • On Thursday, the European Union's cybersecurity agency ENISA gained access to Anthropic's Mythos 5 model, with European Commission spokesperson Thomas Regnier confirming the agency is now testing it alongside OpenAI's GPT-6 Astra.
  • Anthropic had restricted Mythos to roughly 200 partners via Project Glasswing, collaborating with Washington due to the model's ability to exploit cyber vulnerabilities with unprecedented speed. US export controls subsequently barred access for non-American users.
  • Brussels pressed for access amid concerns that Washington might trigger a "kill switch" on advanced US technologies. European Commission holds significant regulatory powers under the EU AI Act, making companies wary of withholding information.
  • Mythos took five months from Anthropic's original announcement to reach ENISA, ending protracted negotiations. European Commission spokesperson Regnier noted ENISA also holds access to OpenAI's GPT-5.6-Cyber model for testing.
  • Regulators now utilize Article 55 to examine general-purpose AI models directly rather than relying on corporate disclosures. EU's AI Office began enforcement with a 36-person team to monitor systemic risks.
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20 Articles

France24France24
Reposted by
La LibreLa Libre
Center

The EU has been negotiating since June an access to this model, which raises enormous fears for cybersecurity, and which was initially distributed to almost exclusively American organisations. "As a result of our constructive collaboration with Anthropic, we can confirm that the European Cybersecurity Agency, Enisa, has obtained access to Mythos 5 and is testing it," said Thomas Regnier, European Commission Digital Spokesman. Enisa had previousl…

·Issy-les-Moulineaux, France
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Lean Right

The European Cybersecurity Agency has been negotiating for several months access to this American model, which raises serious concerns.

·Paris, France
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ReutersReuters
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TNWTNW
Center

EU's cybersecurity agency granted access to Mythos 5 AI model ...

·London, United Kingdom
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Bloomberg broke the news in New York, United States on Thursday, September 10, 2026.
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