Bank of England Says UK Banks Lack Mythos Access
Central-bank-level concern about AI-enabled cyber risk exposes a governance gap in pre-release model access for critical infrastructure—relevant to Australian financial regulators and AISI.
Key points
- Bank of England governor Bailey confirmed UK banks still lack access to Anthropic's Mythos model six weeks after it drew concern.
- The access blockage exposes gaps in developer-government pre-release coordination frameworks for critical infrastructure defenders.
- A postponed US executive order on voluntary pre-release AI engagement adds uncertainty to how this issue resolves internationally.
Implications for Australian agencies
- Monitor Australian Prudential Regulation Authority and Treasury AI policy teams may want to monitor whether Anthropic or other frontier labs establish controlled-access programs for critical infrastructure red-teaming, and how the FSB shapes a cross-border response.
- Consider AISI and DISR could consider whether Australia's existing pre-release AI safety testing arrangements are adequate if analogous access disputes arise with frontier model providers operating in Australian financial or critical infrastructure sectors.
Implications are AI-generated. Starting points, not advice — see methodology for how they're framed.
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Weekly digest, 25 May 2026
"Bank of England Says UK Banks Lack Mythos Access"
Source: Let's Data Science – AI Governance
Published: 31 May 2026
URL: https://letsdatascience.com/news/bank-of-england-says-uk-banks-lack-mythos-access-2f052653
Bank of England governor Andrew Bailey stated that UK banks have not yet gained access to Anthropic's Mythos model for defensive cyber testing, attributing the delay to US administrative processes. Bailey, who also chairs the Financial Stability Board, stressed the need for a cross-border approach to AI-enabled cyber risk. A broader US executive order that would have established a voluntary pre-release engagement framework for advanced AI models has been postponed. Cybersecurity experts cited by Reuters note that some fears about Mythos-enabled hacking may be overstated, indicating no settled technical consensus on the risk magnitude.
Implications for Australian agencies:
- [Monitor] Australian Prudential Regulation Authority and Treasury AI policy teams may want to monitor whether Anthropic or other frontier labs establish controlled-access programs for critical infrastructure red-teaming, and how the FSB shapes a cross-border response.
- [Consider] AISI and DISR could consider whether Australia's existing pre-release AI safety testing arrangements are adequate if analogous access disputes arise with frontier model providers operating in Australian financial or critical infrastructure sectors.
Retrieved from SIMS, 18 July 2026.