News linked to both this project and an event.
Anthropic will meet with Trump administration officials today regarding the "Mythos" model. (Jin Shi)
According to Cointelegraph, cybersecurity leaders led by former Facebook Chief Security Officer Alex Stamos jointly penned a letter urging the Trump administration to lift restrictions on the use of Anthropic’s Mythos model. They argue that these restrictions harm defenders far more than attackers, hindering the overall development of the cybersecurity ecosystem.
the U.S. government's export controls and access restrictions on Anthropic's models, Fable 5 / Mythos 5, were partly driven by Amazon's cybersecurity research and AWS CEO Andy Jassy's communications with the White House.It is understood that research submitted by Amazon indicated that through a series of prompt tests, researchers could induce Fable 5 to output sensitive information potentially usable for cyberattacks, raising security concerns. Subsequently, Andy Jassy reported these findings to the U.S. government level, prompting the White House to implement further restrictions, including banning foreign users from accessing the model.Meanwhile, former U.S. Commerce Department official Kate Koren revealed that the White House's existing policy stance towards Anthropic may have also influenced this decision. This is because Anthropic has disagreements with the White House over the boundaries of AI safety, including refusing to use its models for mass surveillance or lethal autonomous weapons systems. Although the two sides had eased tensions and expanded cooperation earlier this year, this incident could reignite strained relations between them. (The Wall Street Journal)
David Sacks, co-chair of the President's Council of Advisors on Science and Technology, responded to the regulatory implications of the Anthropic “security controversy,” stating that he has communicated with multiple parties regarding the current situation at Anthropic. He concluded that the core of the event lies in the security controversy sparked by its newly released model “Fable” (the commercial version of the Mythos-class models). Although Anthropic publicly stated the vulnerability was “not severe,” the U.S. government and testers disagreed with this assessment, believing it was significant enough to impact the model's security, even involving “cyber weapons operability” risks.David Sacks further criticized that Anthropic has long emphasized “safety first,” yet in this instance, it was more inclined to keep the consumer version continuously online rather than prioritizing the repair of the security issue. He stated this matter should not be conflated with previous defense or regulatory controversies and noted that the U.S. government still recognizes Anthropic's technical capabilities. The current problem “could have been resolved quickly, the ball is in Anthropic's court.”
Odaily Zcash founder Zooko Wilcox posted on X stating that a security audit conducted by Anthropic's Claude Mythos AI model did not find any "more severe vulnerabilities" in the Zcash protocol. The audit was commissioned by Shielded Labs, a Swiss non-profit organization supporting Zcash development. On June 3, Zcash developers temporarily paused Orchard transactions after discovering a vulnerability in the shielded pool, restoring functionality through an emergency upgrade the same day. The issue stemmed from a four-year-old forging vulnerability in the Orchard shielded pool, identified by security researcher Taylor Hornby with the assistance of Anthropic's Claude Opus 4.8 model. The Zcash Foundation stated there is no evidence that the vulnerability was exploited, nor was any unauthorized value creation detected, and user privacy remained unaffected.Anthropic released the first public version of the Claude Mythos model, Fable 5, on Tuesday, and stated on Friday that it has suspended access to the Fable 5 and Mythos 5 AI models due to export control directives issued by the U.S. government citing national security concerns. (Cointelegraph)
According to Cointelegraph, Zcash founder Zooko Wilcox stated that a security audit of the Zcash protocol—commissioned by Shielded Labs and conducted using Anthropic’s Mythos AI model—did not uncover any new critical vulnerabilities. Previously, security researcher Taylor Hornby discovered, using Claude Opus 4.8, a four-year-old forgery vulnerability in the Orchard shielded pool, prompting developers to urgently suspend Orchard transactions on June 3 and complete the fix the same day. The Zcash Foundation confirmed there is no evidence the vulnerability was ever exploited, and user privacy remained unaffected.
Zcash founder Zooko posted on X, stating that at the request of Shielded Labs, Anthropic and Mythos conducted a security audit of Zcash, and no further critical vulnerabilities were found in the Zcash protocol. Shielded Labs and other parties are continuing to carry out security reinforcement efforts.
According to a post by Zcash co-founder Zooko (@zooko), Anthropic, in collaboration with Mythos, conducted a security audit of the Zcash protocol at the request of Shielded Labs. The audit found no critical vulnerabilities. Shielded Labs and related teams are continuing their efforts to strengthen security, and further updates will be announced separately.
Odaily, Mitchell Amador, CEO of bug bounty platform Immunefi, stated at the WAIB Summit that new AI models such as Claude Opus 4.8 and ChatGPT 5.5 are shifting the balance of cybersecurity offense and defense in favor of attackers, leading to a resurgence in crypto hacks in 2026. Data from DefiLlama shows that in April 2026, illicit actors stole over $634 million from crypto platforms, the highest monthly total since the Bybit hack in February 2025 drove losses of approximately $1.4 billion.Amador stated that the crypto industry is in a critical survival period for the next three to four years until security teams leverage similar AI models to build codebases that attackers cannot breach; if the industry adopts more crowd-sourced security solutions, this timeline could be shortened to within two years. The latest Claude Mythos model, Fable 5, from AI company Anthropic, previously raised concerns about accelerating the ability to exploit crypto vulnerabilities.Anthropic stated that Fable 5 has safeguards in place that will redirect topics related to cybersecurity and similar fields to Claude Opus 4.8. On April 19, an attacker transferred approximately 116,500 restaked Ethereum (rsETH) from Kelp DAO's LayerZero-based rsETH bridge, valued at around $290 million to $293 million at the time. Cross-chain protocol LayerZero stated that the 1/1 decentralized verification network configuration of Kelp DAO relied on a single verification path for processing cross-chain messages, creating a single point of failure. (Cointelegraph)
Anthropic CEO Dario Amodei has stated that if new AI models pose specific risks, governments should have the authority to prevent their deployment. In a lengthy post on Wednesday, Amodei argued that AI models should undergo mandatory third-party testing to assess potential risks across multiple domains. He wrote that if an AI is deemed to pose "unacceptable risks," then "governments should have the power to block or constrain its deployment." This is one of Amodei's strongest statements to date advocating for stricter AI regulation. "I believe that, at least during this current exponential growth phase, the most appropriate analogy is cars, airplanes, or pharmaceuticals—technologies that are essential to the modern economy but can also lead to significant loss of life if poorly designed or misused," Amodei wrote. Anthropic has previously warned that its AI model, Mythos, possesses the ability to discover and exploit critical software vulnerabilities, leading the company to restrict access to a small number of partners. This week, Anthropic also released a new version that removes related cybersecurity attack capabilities. (Jinshi)
According to The Information, sources say Anthropic may release its new model Claude Fable today. Described as a secure version of Mythos, Claude Fable retains some advanced capabilities while adding safety restrictions for high-risk scenarios such as cyberattacks. Anthropic previewed Mythos in April this year, stating that it can discover numerous previously unknown cybersecurity vulnerabilities—but did not directly release it due to potential safety risks. As of now, Anthropic has not officially announced detailed information about Claude Fable.
Odaily reports: Artificial intelligence company Anthropic has agreed to provide a special briefing to relevant officials of the Financial Stability Board (FSB) regarding its Mythos AI model. The briefing will focus on security vulnerabilities identified by the model within the defense systems of the global financial network.According to two sources familiar with the matter, the communication was proposed by Bank of England Governor Andrew Bailey, requesting that Anthropic brief the FSB on its new preview version of the Claude·Mythos AI model. The FSB is currently compiling a report on compliance standards for the application of artificial intelligence in the financial industry, with a draft expected to be released next month for public consultation. Both the FSB and Anthropic have declined to comment on their recent communications. (Jiemian)
in April 2026, two major DeFi attacks on Drift Protocol and Kelp DAO resulted in losses of nearly $600 million, triggering approximately $9 billion in capital outflows from protocols like Aave. TRM Labs investigator Nick Carlsen stated that a hacker group suspected to be linked to North Korea has allegedly used AI to assist in target selection and attack path design. Failsafe CEO Aneirin Flynn said that AI has compressed the time for discovering blockchain vulnerabilities from months to days or even hours. The report noted that Anthropic has not fully opened its AI model Mythos due to cybersecurity risks, claiming the model has the capability to discover large-scale zero-day vulnerabilities. Its research indicates that over half of blockchain attacks in 2025 could theoretically be completed autonomously by AI. (Bloomberg)
Odaily AI security startup Depthfirst has announced that its self-developed AI model outperforms Anthropic’s latest model, Mythos, in code vulnerability detection. It has discovered more critical security vulnerabilities at approximately one-tenth the cost, drawing attention from the cybersecurity industry.According to the company, a month before the launch of Mythos, it had previously claimed to have found a large number of severe vulnerabilities in key internet infrastructure code. Depthfirst now says its model has further identified multiple high-risk vulnerabilities that Mythos missed, all at a lower cost (approximately $1,000 compared to $10,000).Depthfirst CEO Qasim Mithani stated that the company has improved vulnerability detection efficiency through a “single-task-optimized AI model,” significantly reducing the cost of security analysis while enhancing coverage depth.The company completed $80 million in funding in March this year, achieving a valuation of $580 million. Alongside this, it launched the “Open Defense Initiative,” providing $5 million worth of AI detection credits to open-source developers and critical infrastructure projects for vulnerability scanning and security audits. (Forbes)
the White House has recently opposed Anthropic's proposal to expand the use of its AI model, Mythos, to approximately 120 companies, primarily based on security and computing power concerns. Anthropic had originally planned to add 70 new companies to the roughly 50 enterprises currently using Mythos, but the White House has raised doubts, worrying that insufficient computing power might affect the government's own usage of Mythos.Launched in early April, Mythos is designed to detect and exploit critical software vulnerabilities. It is currently limited to testing by enterprises managing key infrastructure, with no plans for public release. The White House fears that expanding usage to more commercial users could create a computing power bottleneck for the government when using the model. This is particularly concerning given Anthropic's computing power procurement agreements with Amazon, Google, and Broadcom—though contracts have been signed, new capacity has not yet come online.On the political front, relations between the White House and Anthropic have not eased. The Trump administration has publicly criticized Anthropic for hiring multiple former officials from the Biden administration and expressed dissatisfaction with its ties to liberal organizations. One example highlights the trust issues between the two sides: Collin Burns, a former researcher at Anthropic who was originally assigned to a government AI model evaluation role, was replaced by senior White House officials upon learning of his background, to avoid having AI company personnel directly involved in matters concerning dealings with other AI companies.Additionally, last week Anthropic disclosed an unauthorized access incident involving the Mythos model, further intensifying external regulatory scrutiny on the company.
According to The Wall Street Journal, the White House has signaled its opposition to Anthropic’s plan to expand the usage scope of its AI model, Mythos. Anthropic recently proposed granting access to Mythos for approximately 70 additional companies and institutions, which would bring the total number of authorized entities to around 120. In response, government officials explicitly objected on security grounds. Sources familiar with the matter said some White House officials are concerned that Mythos possesses the capability to launch cyberattacks and cause large-scale disruption online, viewing the expansion of access as a security risk. Additionally, some officials have questioned Anthropic’s computational resources, expressing doubts about whether the company can simultaneously support a significantly increased number of users while ensuring effective government access to and use of the system. Currently, although both sides aim to ease tensions, the disagreement over Mythos access remains unresolved.
, Anthropic and OpenAI have experienced security incidents in succession, drawing market attention to the security of AI models themselves. Currently, Anthropic is investigating a possible case of unauthorized user access to its Claude Mythos model. Almost simultaneously, OpenAI was also reported to have accidentally opened access to several unreleased models within its Codex application.Analysts believe that such incidents highlight that even AI model providers focused on cybersecurity capabilities still face significant security challenges. While AI is increasingly used for cyber defense, platform security and access control are becoming critical risk points.Industry insiders point out that these vulnerability incidents have intensified scrutiny over the security governance capabilities of AI companies, and also reflect that the security systems of current AI technology still need improvement amid rapid development. (The Information)
According to Decrypt, OpenAI CEO Sam Altman stated that Anthropic is promoting its AI model Claude Mythos through “fear-based marketing,” using narratives about security risks to justify its limited-open strategy. Claude Mythos has recently drawn attention for its ability to autonomously discover software vulnerabilities and perform complex cybersecurity operations. The report notes that Mozilla previously disclosed that the model identified 271 vulnerabilities in the Firefox browser during testing. Meanwhile, discussions surrounding the model’s potential offensive cybersecurity risks continue to intensify. Altman also emphasized that OpenAI will not scale back its infrastructure investments and will continue expanding its computational capabilities.
23pds, Chief Information Security Officer of SlowMist Technology, retweeted a post from the dark web intelligence account Dark Web Intelligence (@DailyDarkWeb), stating that the hacker group ShinyHunters claims to have breached internal systems related to Anthropic’s Mythos model and has shared screenshots—including those of the user management panel, AI experiment dashboard, and model performance and cost analysis. As of now, Anthropic has not officially confirmed the authenticity of this claim. Given that numerous enterprises have already applied for trial access to the relevant models, if this report proves true, it could pose indirect security risks to leading technology firms and crypto-related businesses.
According to Decrypt, Mozilla recently revealed that Anthropic’s latest AI model, Claude Mythos, identified 271 security vulnerabilities during internal testing of the Firefox browser; all related vulnerabilities were patched this week. For comparison, a previous Anthropic model had detected only 22 security-sensitive vulnerabilities. Mozilla stated that all discovered vulnerabilities fell within the scope of what top human researchers could identify. Claude Mythos was officially launched in March 2026 and is Anthropic’s most powerful model to date for reasoning, coding, and cybersecurity. It is currently available exclusively to vetted partners—including Amazon, Apple, and Microsoft—under Anthropic’s “Project Glasswing” initiative.