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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 Emergence of Mythos AI Anthropic's recent announcement about its new model, Claude Mythos Preview, has raised both excitement and concern. The model is remarkably effective at finding security vulnerabilities in software, but Anthropic has decided not to release it to the general public. Instead, it will only be available to a select group of companies to scan and fix their own software. The Capabilities of Mythos AI While Anthropic's model is impressive, it's not unique. Other models, such as OpenAI's GPT-5.5, have comparable capabilities. The UK's AI Security Institute found that GPT-5.5 can also find software vulnerabilities. Additionally, smaller and cheaper models have been able to reproduce Anthropic's published results. The Financial Implications of Mythos AI The high cost of running Mythos AI is a significant factor in Anthropic's decision not to release it publicly. The company's valuation can be boosted by hinting at the model's capabilities without actually proving them. This strategy allows Anthropic to maintain a competitive edge while limiting access to the model. The Impact on Cybersecurity The emergence of models like Mythos AI has significant implications for cybersecurity. These models can be used by both attackers and defenders to find and exploit vulnerabilities in software. This could lead to a more dangerous and volatile world, with increased risks of cyber attacks and data breaches. The Future of AI and Cybersecurity As AI models continue to improve, we can expect to see more frequent software updates and a greater emphasis on cybersecurity. However, the long-term implications of these models are more complex. They may be used to find loopholes in complex systems, such as tax codes and regulatory systems, which could have far-reaching consequences for society. The Broader Implications of Mythos AI The capabilities of Mythos AI have broader implications beyond cybersecurity. These models can be used to analyze complex systems and find vulnerabilities, which could be applied to areas such as tax law and environmental regulations. This raises important questions about the potential misuse of these models and the need for careful consideration of their development and deployment.

Anthropic announced Claude Mythos this month – an AI model that can locate unknown “zero‑day” vulnerabilities, exploit them and even chain them together to seize control of major operating systems and browsers. The company said it would not release the model publicly, warning that it could turn ordinary computers into crime scenes. Anthropic’s Claude Mythos: A Zero‑Day Hunting AI Held Back The Silicon Valley firm introduced the model under the banner of Project Glasswing, naming 40 partner organisations to help “patch” weaknesses before malicious actors can weaponise them. All partners are U.S.‑based, reflecting the core of the American‑led digital infrastructure. Outside the United States, only the UK’s AI Security Institute received a preview, prompting British ministers to warn that AI will make cyber‑attacks “much easier and faster”. European banks are slated to test the system next. Quantifying the Threat: Partners, Findings, and Financial Stakes 40 organisations enlisted under Project Glasswing. Mozilla’s test on Firefox uncovered 10 times more flaws than previous manual audits, all of which were subsequently fixed. Anthropic’s reputation suffered a $1.5 billion piracy settlement last year. The U.S. Pentagon labelled Anthropic a “security risk” in February, cutting it off from lucrative contracts before reinstating ties via the White House. Why Mythos Redefines Cybersecurity and Geopolitical Power By automating the discovery of systemic vulnerabilities, Mythos shifts the cyber‑risk landscape from a niche skill set to a scalable service. This democratisation means that state actors, large banks, and even smaller firms could launch sophisticated attacks without deep expertise. The U.S. government’s ambivalent stance – first banning, then courting Anthropic – underscores the strategic value of owning such capability. Control over the most powerful AI models could translate into geopolitical leverage, reshaping alliances and rivalries in the digital domain. Future Scenarios: Regulation, Arms Race, and a Fragmented Web Without an international framework for AI‑driven cybersecurity, the internet risks splintering into competing “secure” enclaves, each trusting only its own patched ecosystem. Potential outcomes include: Stringent export controls on advanced AI models. Public‑private coalitions mirroring Project Glasswing expanding globally. An AI arms race where nations backstop private firms to secure strategic advantage. Legal mandates for transparency and auditability of AI systems that can affect critical infrastructure. How quickly policymakers can establish coordinated safeguards will determine whether Mythos becomes a catalyst for a safer, more resilient internet or a catalyst for a fragmented, contested cyber‑space.

The Birth of DAWG: A 24,000% Surge in FundingThe Pentagon is signaling a definitive strategic shift toward the future of combat with a historic budget request for the newly established Defense Autonomous Warfare Group (DAWG). In its 2027 budget proposal, the Department of Defense has asked for over $54 billion to fund this initiative, representing a staggering 24,000% increase from the previous year. This funding is not merely an upgrade; it is a complete absorption of the Biden-era "Replicator" initiative, signaling a permanent institutional pivot toward autonomous and remotely operated systems across air, land, and sea.Scope of Operations: The funding targets "Drone Dominance," aiming to integrate collaborative autonomy efforts into the broader military framework.Strategic Absorption: DAWG has officially absorbed the previous Replicator initiative, which aimed to acquire low-cost drones for Pacific theater combat.Budgetary Scale: Outpacing Global CompetitorsThe sheer magnitude of this financial commitment highlights the US military's determination to maintain technological superiority. The $54 billion request is more than half of the entire defense budget of the United Kingdom. This massive influx of capital comes at a time when the US is actively severing parts of its defense-tech ecosystem from China, having enacted sweeping bans on Chinese-made drones and components last December.Industry Shakeout: Winners and CriticsThis funding bonanza is reshaping the defense-tech landscape, creating a clear divide between beneficiaries and skeptics. Established players and startups alike are positioning themselves to capitalize on this demand, though questions remain about the efficacy of the procurement strategy.Key Beneficiaries: The funding ecosystem includes established players like Palmer Luckey’s Anduril and startups such as Neros, Skydio, and Powerus.The Criticism: Some experts, like former State Department Russia specialist Kristofer Harrison, argue the funding is a "slush fund" for specific companies rather than a strategic investment in proven battlefield technologies like those being used in Ukraine.Navigating the Risks of AI WarfareDespite the financial momentum, the transition to AI-powered warfare is fraught with peril. Former CIA director David Petraeus has warned that the US lacks a military doctrine for deploying autonomous formations and that leaders require substantial new training to manage these systems.Furthermore, the safety of these systems is a growing concern. Evaluators have found exploitable failures in even the most advanced AI systems. As noted by experts from Palisade Research and the UK AI Security Institute, these failures could endanger warfighters and civilians in a real-world conflict context. The Pentagon’s ongoing dispute with Anthropic over the use of models for surveillance and lethal weapons further underscores the ethical and technical challenges facing this new era of warfare.

The Mythos Breach: Supply Chain Vulnerabilities ExposedAnthropic has confirmed it is investigating a report of unauthorized access to its Mythos model, a high-stakes cybersecurity tool not yet released to the public. The incident occurred after a small group of users gained access through a third-party vendor environment, raising immediate concerns about the security of private AI testing ecosystems.How the Breach OccurredBloomberg reported that the access was facilitated by a worker at a third-party contractor for Anthropic who utilized methods typical of cybersecurity researchers. While the group reportedly gained access to the model on the same day it was being rolled out to select partners like Apple and Goldman Sachs, their intent appears to be exploratory rather than malicious. They have not reportedly run cybersecurity prompts, but the breach itself exposes a critical flaw in how sensitive AI models are managed outside of Anthropic's direct control.The "Step Up" in Cyber-Threat CapabilitiesThe significance of this breach lies in the nature of the Mythos model. The UK AI Security Institute (AISI) has previously classified Mythos as a "step up" from previous models in terms of cyber-threat potential. Unlike standard AI, Mythos is designed to identify and exploit system weaknesses autonomously.Autonomous Execution: The model can carry out multi-step attacks without human intervention.Efficiency: Tasks that would normally take human professionals days to complete can be simulated in minutes.Success Rate: Mythos successfully completed a 32-step simulation of a cyber-attack in 3 out of its 10 attempts.Regulatory and Industry ImplicationsThe incident has prompted warnings from the highest levels of government. Kanishka Narayan, the UK’s AI minister, stated that businesses should be "worried" about the model's ability to spot flaws in IT systems. This breach serves as a stark reminder that the "black box" nature of advanced AI models makes them difficult to secure, even when they are intended for defensive purposes.The Future of AI Security TestingAs AI models become more capable of autonomously navigating complex digital landscapes, the traditional perimeter defense is no longer sufficient. This incident suggests that the industry must move beyond simple access controls and implement rigorous, continuous auditing of third-party environments to prevent high-risk technology from falling into the wrong hands.

The LeadAnthropic has made the unprecedented decision to withhold its latest frontier model, Mythos, from the public domain, citing an existential threat to global cybersecurity infrastructure. This move comes after a report of unauthorized access and highlights the terrifying potential of AI to automate the discovery and exploitation of critical system flaws.The Anatomy of Mythos: A Zero-Day WeaponMythos is not merely a chatbot; it is a specialized AI model designed to identify and exploit zero-day vulnerabilities—flaws in software that are unknown to developers and have no patch available. Anthropic announced the model on 7 April but immediately ruled out public release, describing it as a "watershed moment for cybersecurity." The model can theoretically identify unnoticed flaws in every major IT operating system and web browser, some of which have persisted for decades.Project Glasswing: Anthropic has restricted access to select partners, including Apple and Goldman Sachs, to assess risks.Unauthorized Access: A "handful" of users in a private online forum reportedly gained access to the model, raising alarms about containment.Quantifying the Threat: The AISI AssessmentThe UK's AI Security Institute (AISI) has conducted a rigorous assessment, confirming that Mythos represents a significant step up in cyber-threat capabilities. The institute noted that Mythos can carry out multi-step attacks without human guidance, a capability previously unattained.Attack Simulation: Mythos successfully completed a 32-step simulation of a cyber-attack, a first for the AISI.Vulnerability Discovery: The model flagged thousands of zero-day flaws across complex systems, including FreeBSD.Expert Nuance: While some analysts argue the hype is overstated compared to cheaper models, the ability to chain attacks is a distinct evolution.Financial Sector on High Alert: Project Glasswing and Regulatory ResponseThe potential for Mythos to fall into the wrong hands has triggered a systemic response from the global financial sector. With 40 companies involved in Project Glasswing, the stakes extend far beyond technology firms.Regulatory Action: The US Treasury Secretary and UK regulators have convened emergency meetings to discuss the risks.Systemic Risk: UK government modelling suggests a successful hack could disrupt direct debits, mortgages, and cash withdrawals, potentially causing a bank run.Defense vs. Offense: Banks are rushing to integrate Mythos into their defenses, but the dual-use nature of the technology remains a primary concern.The Containment Paradox: Can We Keep Dangerous AI in the Box?The unauthorized access to Mythos proves that even closed-source, high-security models are vulnerable to insider threats. The future of AI safety now hinges on the "containment paradox": the difficult task of leveraging these powerful tools for defense while preventing them from becoming autonomous weapons.As AI capabilities accelerate, the window for safe, controlled deployment is closing. The industry must move beyond simple testing to establish robust governance frameworks before these models become ubiquitous.

The NSA is reportedly employing Mythos Preview, a frontier AI model from Anthropic built for cybersecurity tasks, despite a recent Department of Defense warning that labeled the company a "supply chain risk." The move highlights a growing tension between U.S. intelligence agencies seeking advanced AI tools and the Pentagon’s caution over uncontrolled access. Key Developments Anthropic announced Mythos in early 2026 as a model capable of both defensive and offensive cyber operations. Anthropic limited access to roughly 40 organizations, publicly naming only a dozen. The NSA is among the undisclosed recipients, using the model primarily to scan environments for exploitable vulnerabilities. The UK’s AI Security Institute also confirmed access to Mythos. The Pentagon’s dispute began when Anthropic refused to make its flagship model Claude available for mass domestic surveillance and autonomous weapons development. Anthropic’s CEO Dario Amodei met with White House chief of staff Susie Wiles and Treasury Secretary Scott Bessent on 2026-04-20, signaling a thaw in relations with the Trump administration. Data & Market Impact Access limited to ~40 entities represents a highly exclusive market segment for AI‑driven cyber tools. Anthropic’s decision to withhold public release suggests a valuation of security over scale, potentially positioning the firm as a premium supplier to government and critical‑infrastructure clients. By restricting the model, Anthropic avoids the broader market risk of misuse, but also cedes commercial revenue that a public rollout could generate. Why This Matters Provides the NSA with a cutting‑edge capability to identify zero‑day vulnerabilities faster than traditional tools. Highlights a policy paradox: the same AI that the Pentagon deems a supply‑chain threat is being leveraged by a key intelligence agency. Sets a precedent for selective government access to powerful AI models, potentially widening the gap between public and classified AI capabilities. Raises concerns for private sector and allied nations about the diffusion of offensive‑capable AI tools. Expert Insight Security analysts view the NSA’s adoption of Mythos as a pragmatic response to the accelerating pace of cyber threats. The model’s ability to parse massive codebases and simulate attack vectors offers a force multiplier for vulnerability research. However, the Pentagon’s supply‑chain warning underscores the risk that such a model could be reverse‑engineered or leaked, enabling adversaries to weaponize the same capabilities. Anthropic’s refusal to grant unrestricted Pentagon access likely stems from a desire to retain control over the model’s most destructive functions, preserving both ethical standing and commercial leverage. What Happens Next Congressional oversight may intensify, potentially mandating stricter reporting on AI tools used by intelligence agencies. Anthropic could expand the limited‑access program, offering tiered licensing to other vetted government bodies while maintaining a public “research‑only” version. The Pentagon may pursue its own in‑house AI development to reduce reliance on external vendors deemed risky. International allies, especially the UK, may seek similar access, prompting coordinated policy frameworks for AI security collaboration.

Goldman Sachs's chief executive, David Solomon, has expressed heightened awareness of the capabilities of Anthropic's Mythos AI model and is collaborating closely with the tech firm following warnings about the cybersecurity risk it poses.The US bank has been closely monitoring the rapid advancements in artificial intelligence, including large language models (LLMs), as part of broader efforts to protect itself from hackers.“Obviously the LLMs are making rapid progress and we’re hyper-aware of the enhanced capabilities of these new models with the help of the US government and the model publishers,” Solomon told analysts on an earnings call on Monday.Anthropic, the company behind the Claude family of AI tools, claimed last week that its latest model, Mythos, posed an unprecedented risk due to its ability to expose flaws in IT systems. The company warned that AI models have reached a level of coding capability where they can surpass all but the most skilled humans at finding and exploiting software vulnerabilities.Solomon emphasized that Goldman Sachs is working closely with Anthropic and all of its security vendors to harness frontier capabilities. “We are very focused on supplementing our cyber and infrastructure resilience. And this is part of our ongoing capabilities that we have been investing in, and are accelerating our investment in.”The news comes after the US Treasury secretary, Scott Bessent, summoned Solomon and other big American bankers to Washington to discuss the Mythos model last week. The meeting focused on heads of so-called systemically important banks, where regulators believe that a major disruption to their operations, or their potential collapse, would put financial stability at risk.On Monday, the UK government’s AI Security Institute (AISI) warned that Mythos was a “step up” over previous models in terms of the cyber threat it posed. AISI said Mythos could carry out attacks that required multiple actions and discover weaknesses in IT systems without human intervention.