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Anthropic’s Claude Mythos to be Presented to the Financial Stability BoardAnthropic will brief the Financial Stability Board (FSB), chaired by Bank of England governor Andrew Bailey, on the cyber‑defence implications of its Claude Mythos model, which has raised alarm among security experts.Mythos is not being released publicly; access is limited to select tech firms and banks such as Apple and JP Morgan.The briefing follows a report by the Financial Times and confirmation from a source familiar with the discussions.The FSB’s membership includes senior officials from the US, UK, Australia and China.Quantifying Mythos’ New Cyber‑Testing PerformanceThe UK’s AI Security Institute (AISI) noted a “notable capability jump” in the version shown to banks. In the “cooling tower” test, Mythos succeeded in 3 out of 10 attempts – a first for any model evaluated by AISI.Previous iterations had not completed the test.AISI reports that the length of autonomous cyber tasks has doubled within months.Implications for Global Financial CybersecurityThe briefing comes as the International Monetary Fund (IMF) warned that AI‑driven cyber risks are rising for financial stability. Central bank leaders, including Goldman Sachs CEO David Solomon and JP Morgan CEO Jamie Dimon, have already expressed heightened awareness of Mythos’ capabilities.Cyber risk does not respect borders; inconsistent oversight could weaken the interconnected financial system.Experts caution that most breaches still stem from traditional weaknesses such as weak authentication.What the Next Phase of AI‑Driven Cyber Risk May Look LikeAISI is developing tougher hacking tests to track AI progress, while the FSB is expected to issue recommendations for coordinated oversight among regulators. If the trend of rapid capability gains continues, financial institutions may need to embed AI‑specific cyber‑defence measures into their risk frameworks.Potential for tighter collaboration between AI developers and regulators.Increased scrutiny of AI models before deployment in critical infrastructure.

The Impact of MFS Collapse on Barclays Barclays is pulling back from lending to risky borrowers, as its chief executive warned of increasing numbers of fraud cases and the bank took a £228m hit from the failure of a mortgage lender. The mortgage lender Market Financial Solutions (MFS) collapsed in February amid allegations of fraud and the UK’s financial regulator has since launched an investigation into the scandal. Barclays provided banking services to MFS and said the £228m hit had pushed total credit impairment charges to £823m in the first three months of 2026, up from £643m a year earlier. The Data Analysis £228m: The hit taken by Barclays from the collapse of MFS £823m: Total credit impairment charges for Barclays in Q1 2026 £643m: Total credit impairment charges for Barclays in Q1 2025 3%: Increase in Barclays' pre-tax profit in Q1 2026 6%: Increase in Barclays' revenues in Q1 2026 The Impact Analysis The collapse of MFS, Tricolor, and First Brands have raised fears over lending standards in the $2tn private credit industry, which has come under greater scrutiny from regulators. There are concerns that the fallout could destabilise traditional banks that issue loans to the shadow banking sector. Andrew Bailey, the governor of the Bank of England and chair of the Financial Stability Board, has described the private credit industry as a “relatively opaque world” and stressed the need for transparency and solid stress testing. The Prediction Barclays' CEO, CS Venkatakrishnan, warned that fraud cases will only continue to increase in frequency, and it is essential to have strong defences. The bank's CFO, Anna Cross, stated that businesses were in “good shape” and there had been no credit deterioration in companies or consumers. The bank's quarterly income from investment banking topped £4bn for the first time, driven by 16% growth in equities income after trading volatility since the start of the Iran war on 28 February.

The heads of the United Kingdom, United States and European Union central banks and treasuries are set to join a high‑level war game in Washington on Saturday, designed to probe how they would manage the failure of a globally significant bank. Participants include senior officials from the US Federal Reserve, the European Central Bank and the Bank of England, whose governor Andrew Bailey also chairs the Financial Stability Board. Their presence underscores the seriousness with which regulators are treating cross‑border coordination. The exercise is a “desktop” stress test conducted behind closed doors at the Federal Deposit Insurance Corporation (FDIC) headquarters. It will simulate a Lehman Brothers‑style collapse and test the joint response mechanisms of the three jurisdictions. Holding the drill during the International Monetary Fund and World Bank spring meetings provides a rare opportunity for the officials, who are already gathered in the capital, to engage in face‑to‑face scenario planning. Regulators have warned that the financial system faces new strains from artificial‑intelligence advances, risky private‑credit lending and market volatility linked to the US‑Israel conflict over Iran. In particular, the latest AI model from US firm Anthropic, called Mythos, has been flagged for its ability to uncover vulnerabilities in IT systems, raising concerns about cyber‑related financial shocks. Bank of England Governor Andrew Bailey emphasized the urgency, stating, “It is a very serious challenge for all of us. It reminds us how fast the AI world moves.” His remarks highlight the intersection of technological risk and traditional banking stability. The FDIC described the event as a “trilateral principal level exercise” aimed at coordinating resolution strategies for global systemically important banks (G‑SIBs). While the agency did not disclose the specific scenarios, it stressed that the drill would enhance each jurisdiction’s understanding of resolution regimes, strengthen cross‑border coordination, and bolster confidence in orderly bank resolutions. Since the 2008 Lehman collapse, such stress‑testing simulations have become routine among regulators, serving as a preventive measure against repeat systemic failures. By convening senior policymakers and central bankers for this war game, authorities hope to sharpen their collective response toolkit, ensuring that any future bank failure can be managed swiftly and with minimal disruption to the global economy.

British financial institutions are set to receive Anthropic’s latest AI model, Mythos, within the coming week, despite the company’s own assessment that the technology poses a significant security risk.Anthropic, the creator of the Claude suite, has so far limited Mythos to a handful of U.S. tech giants such as Amazon, Apple and Microsoft. The firm now plans to extend the rollout to major UK banks, a move announced by Pip White, head of Anthropic’s UK, Ireland and Northern Europe operations, during a Bloomberg Television interview.The concern stems from Mythos’s ability to identify and exploit software flaws at a level that rivals the most skilled human hackers. In a recent blog post, Anthropic warned that such capabilities could trigger severe repercussions for economies, public safety and national security if misused.Finance ministers, senior executives and regulators convened in Washington for the IMF and World Bank spring meetings to discuss these emerging threats. Canadian Finance Minister François‑Philippe Champagne emphasized the need for vigilance, describing the AI risk as an “unknown unknown” that demands robust safeguards to protect the resilience of the financial system.Bank of England Governor Andrew Bailey, who also chairs the Financial Stability Board, described the situation as a “very serious challenge” and highlighted the dilemma regulators face in timing the introduction of rules: acting too early could stifle innovation, while delaying could allow risks to spiral out of control.European Central Bank President Christine Lagarde echoed these concerns, noting that while Anthropic’s initiative reflects responsible innovation, the absence of a clear governance framework leaves the technology vulnerable to misuse. She called for the development of comprehensive standards to guide safe deployment.As UK banks prepare to integrate Mythos into their operations, the financial sector stands at a crossroads between harnessing AI’s economic benefits and averting potential cyber‑security crises.

In a stark address delivered as the cease‑fire in the Iran conflict teetered, IMF Managing Director Kristalina Georgieva warned that the war will leave a permanent scar on the global economy, slowing growth beyond the IMF’s original projections for 2026. Georgieva noted that, had the hostilities not erupted six weeks ago, the Fund would have been poised to raise its 2026 growth outlook. Instead, even the most optimistic scenario now entails a downgrade, and a swift return to pre‑war conditions appears unlikely. The uncertainty surrounding the cease‑fire—exacerbated by divergent positions of Washington and Tehran—has already pushed oil prices higher, reflecting fears of continued disruptions to shipments through the Strait of Hormuz, a vital conduit for world energy supplies. According to the IMF’s upcoming World Economic Outlook, the conflict’s “scarring effects” will translate into lower living standards worldwide. The Fund had previously forecast global growth of 3.1% in 2026, a modest slowdown from 3.2% in 2025, buoyed by a tech‑driven investment surge. Georgieva emphasized that the war arrived when the economy was riding “considerable momentum” from technology investment and supportive financial markets. She outlined the mechanisms of damage: damaged infrastructure, supply‑chain interruptions, eroded confidence, and prolonged uncertainty over oil and gas production in the region. These factors will depress growth regardless of whether a peace agreement is ultimately reached. Georgieva highlighted that the most vulnerable will be net oil‑importing nations, poorer economies and small island states, which stand to feel the brunt of higher energy costs and reduced trade flows. She urged governments to avoid unilateral measures such as export bans or price controls, warning that such actions could "pour gasoline on the fire" and further destabilise markets. With many countries already carrying elevated debt levels and higher borrowing costs, the IMF chief called for targeted, temporary assistance to protect the most at‑risk households. She cautioned against broad tax cuts or blanket energy subsidies, which could stoke inflation and strain fragile public finances. Central banks, she added, should keep policy rates steady while remaining ready to act against inflationary pressures. Bank of England Governor Andrew Bailey, who also chairs the Financial Stability Board, echoed the IMF’s concerns, describing the conflict as a "very big shock" that has heightened market volatility. He stressed that the situation remains fluid and that policymakers must stay vigilant. Overall, the IMF’s message is clear: the Iran war will reshape the global growth trajectory for the foreseeable future, and coordinated, prudent policy responses are essential to mitigate its lasting impact.