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ECB's Elderson urges euro area banks to quickly prepare for Mythos

Published by Global Banking & Finance Review

Posted on May 13, 2026

2 min read

· Last updated: May 13, 2026

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ECB urges banks to quickly prepare for AI-assisted cyberattacks

ECB's warning and the threat of AI-driven cyberattacks

Urgency for euro area banks to act

FRANKFURT, May 13 (Reuters) - European Central Bank board member Frank Elderson on Wednesday urged banks in the euro area to quickly prepare for potential cyberattacks launched with the help of Anthropic's Mythos AI model or similar tools.

Elderson, who is vice chair of the ECB's bank supervision arm, said in an interview in ECB publication Supervision Newsletter that euro area banks' lack of access to Mythos added to the severity of the issue.

Critical need for proactive measures

"Lack of access is not an excuse for inaction. On the contrary, it makes it even more critical that banks step up and act now," he said.

Comparisons with U.S. and global banks

Reuters reported this week that large U.S. banks, which have been granted early access to Mythos, are rushing to fix scores of data system weaknesses flagged by the tool.

Mythos is viewed by cybersecurity experts as a significant challenge to the banking industry and its data technology systems, prompting a series of warnings from regulators and policymakers.

Future risks from advanced AI models

Elderson warned that banks need to brace for future AI models that enable even more aggressive cyberattacks. 

"We need to be able to deal with ever more capable future models that could be released in relatively quick succession," he said.

ECB's response and regulatory actions

ECB's defensive strategies

The central bank's president, Christine Lagarde, said earlier this month the ECB is studying defences against Mythos-guided cyberattacks, while being at a disadvantage for lack of access to the model.

Supervisory measures

Reuters reported in April that ECB supervisors would ask the banks that they monitor about their preparedness for the new source of risk.

Global access disparities

The global gap in access to the AI model could widen for Europe, with Japan's three largest banks likely to be cleared to start work with Mythos in about two weeks.

Call to address vulnerabilities

Elderson said banks - and the contractors they rely on - need to quickly fix even minor vulnerabilities that have typically been patched only in longer software update cycles.

(Reporting by Ludwig Burger and Reinhard Becker, Editing by Linda Pasquini and Hugh Lawson)

Key Takeaways

  • Anthropic’s Mythos AI can discover and exploit zero‑day vulnerabilities across major systems, making it a dual-use tool for both defenses and attacks—banks must act now (scientificamerican.com)
  • Even without direct access to Mythos, institutions—including the ECB—are at a disadvantage and must bolster cyber defenses proactively (globalbankingandfinance.com)
  • Banks need to accelerate modernization: adopt dynamic monitoring, automated patching and share intelligence across peers and regulators to mitigate emerging AI‑driven cyber threats (spglobal.com)

References

Frequently Asked Questions

What did ECB's Frank Elderson urge euro area banks to do?
Frank Elderson urged euro area banks to quickly prepare for potential cyber attacks using Anthropic's Mythos AI model or similar tools.
Why is it critical for euro area banks to act now against cyber threats?
Elderson emphasized that lack of access to Mythos is not an excuse for inaction, making proactive preparation even more important.
Do euro area banks currently have access to Mythos AI?
According to Elderson, euro area banks currently do not have access to Mythos AI.
Who is Frank Elderson?
Frank Elderson is a European Central Bank board member and Vice Chair of the ECB's bank supervision arm.
What is the main concern regarding Mythos AI in the banking sector?
The main concern is the potential use of Mythos AI or similar tools to facilitate cyber attacks against euro area banks.

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