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Anthropic opened the research preview of Claude Duet on October 21. This is a standalone application where Claude acts as a proactive agent, prompting users about important matters, completing tasks assigned by users, and continuing to work after the user leaves; it will seek confirmation before taking action on behalf of the user. The product is aimed at professionals and small business owners, providing iOS, Android applications, and claude.ai. The research preview is included in the Pro and Max plans, sharing usage limits with other Claude features. Users need to join a waitlist, starting with Pro and Max users in the United States.Claude Duet is designed around Claude Opus 5.5. It sends a brief summary across connected applications every morning, monitors these applications throughout the day, and only sends messages when attention is needed. It can handle tasks such as scheduling meetings, building dashboards, financial or sales forecasting, prototyping, and web applications. The application utilizes the memory, skills, and connected applications from the Claude account, supports typing or voice communication in the same continuous thread, and is equipped with a virtual machine with a browser, not relying on the user's device to stay powered on. It can use over 6,000 connectors and plugins in the Claude Marketplace, with examples including Gmail, Slack, Intuit QuickBooks, Stripe, Gusto, LinkedIn, Docusign, HubSpot, Canva, and Shopify. Business purchases can use Stripe's Link digital wallet or Shopify's Shop Pay, and it will soon support logging into websites using saved login information from 1Password with user permission.In terms of security, the product follows a trusted agent framework, where hosted agents do not directly see passwords or login tokens, and it has an automatic mode classifier and prompt injection protection; Anthropic has conducted red team and external penetration testing and included it in a public vulnerability bounty program. Before sending messages, making payments, signing documents, or deleting content, it will display the intended action and wait for approval. Securities trading or transfers between accounts are prohibited even if approved. Early versions may misinterpret conversations or misjudge urgency, with core functions focused on work, while personal tasks like booking tickets are weaker. It currently cannot show users its browser and is separate from the main Claude application, with background checks counted towards plan usage.

According to the Financial Times, the deposit scale of crypto lending vaults has surpassed $10 billion, a significant increase from $4 billion at the beginning of last year, reflecting the growing demand from investors for digital asset yield strategies. These vaults operate through smart contracts on decentralized finance platforms, with each vault having a "curator" who effectively acts as an investment manager responsible for selecting lending strategies, setting risk limits, and charging fees. Their yields typically range from 3% to 10%, with riskier strategies yielding up to 20% or even higher.The allure of returns comes with significant risks. Loans may be collateralized by illiquid tokens, crypto-asset-backed stablecoins, or tokenized private credit, and if the collateral depreciates or becomes difficult to sell, depositors will face losses. Automatic liquidation may exacerbate market downturns, while hacking attacks, code errors, and pricing mechanism flaws can introduce additional vulnerabilities. Although publicly accessible smart contracts provide transparency, investors may focus only on surface yields while overlooking their underlying risk exposures. Major depositors currently include fintech companies, digital asset treasury firms, and hedge funds.Bitcoin lending institution Two Prime is one of the companies that recently entered this market. The company launched a Bitcoin lending vault on the Pareto platform in September, targeting an annualized yield of 1.5% to 2% through institutional lending. This vault accepts wrapped Bitcoin, with a minimum deposit of 5 WBTC, and has invested approximately $10 million of its own funds to absorb initial losses. On the regulatory front, the U.S. Securities and Exchange Commission has raised questions regarding the securities held by the vaults, while European regulators have proposed regulating intermediaries that provide access to DeFi.

Apple Inc. announced the expansion of App Store review rules to include the regulation of AI-generated non-consensual intimate images. The platform had previously banned pornographic content, and the new rules require developers to proactively prevent and remove AI-generated deepfake content. If effective action is not taken, applications containing such violations will be forcibly removed from the store.The updated Clause 1.2 specifically mentions applications that create AI content and names controversial products such as Grok. Previously, users complained that Grok, a product of xAI, was used to create nude and sexually suggestive deepfake images. Earlier this year, Apple warned xAI that if such content continued to spread, Grok would be removed from the App Store; subsequently, xAI implemented safety measures, and the updated version was approved.The newly added Clause 2.5.19 targets so-called "bait-and-switch" tactics, stating that if developers hide new features or modules outside of the submitted review version, especially harmful features like "de-clothing" that are activated only after approval, they may be removed from both the App Store and the Apple Developer Program. Updates to Section 5 will also extend the ban on applications promoting human trafficking or child exploitation to alternative application distribution channels. Apple stated that when developers violate these guidelines, the related applications will be removed, and the developer's eligibility will be terminated.

On October 15, MSCI revised the eligibility rules for constituents of the global investable market index, tightening the definition of "non-operating companies" and subjecting Bitcoin treasury companies to stricter scrutiny. The Strategy led by Michael Saylor has not been removed from the MSCI index.MSCI stated that it will assess whether a company qualifies as a "non-operating" company based on its operational and financial characteristics, and companies holding digital assets may still have genuine operational activities; existing constituents are still subject to a buffering mechanism, and the relevant consequences will need to be clarified further in the November index review.

Upbit stated that after MANTRA was designated as a trading warning item, and following a declaration request submitted by MANTRA and the completion of the review, Upbit deemed it necessary to further review the current processing progress and decided to extend the designation period of MANTRA as a trading warning item.

Cryptocurrency hardware wallet manufacturer Ledger announced the launch of Ledger Agent Intent, which is now open for free to all signature devices compatible with Ledger. The AI agent can monitor the market and provide portfolio optimization suggestions, allowing users to review and approve relevant actions on their Ledger devices, while the private keys remain under the user's control.Agent Intent will be directly integrated with OpenClaw, allowing users to register the OpenClaw agent and authorize actions on their Ledger Atom devices, with the OpenClaw application pre-installed on the device. This tool also supports Pay.sh from the Solana Foundation, and requests made by the agent can enter a unified queue for users to choose the timing for signing.Ledger collaborates with Venice AI to address privacy issues and stated that user data will not be used for training models by third parties.

Box CEO Aaron Levie stated that the significant increase in AI tokens and computing power consumption will come from large-scale autonomous agent clusters operating internally within enterprises, rather than personal assistants. He anticipates that the related tokens and computing power consumption could see an increase of about 100 times.Aaron Levie mentioned that the usage of personal agents will generally be capped per person. Knowledge work is currently limited by the ability of humans to generate, transmit, and produce information; at this stage, most agents are still tasked by humans, compressing about 3 to 5 hours of work into approximately 10 minutes, still constrained by the speed at which humans initiate tasks.He further stated that true significant growth will occur when backend agents are deployed in clusters to execute tasks that are completely decoupled from human initiation. The above remarks were quoted by @MTSlive.

According to The Block, the Federal Trade Commission (FTC) is conducting an early review of the online sports betting industry, focusing on allegations of false or misleading advertising by betting companies such as FanDuel and DraftKings. Prediction market platforms like Kalshi and Polymarket are expected to be outside the scope of the review.

a16z crypto invited Stanford University professor Dan Boneh, a16z crypto partner Eddy Lazzarin, and other experts to discuss the threats AI poses to cryptography. The experts pointed out that recent advancements in AI in the field of mathematics have not included cryptographic results and have not proven any specific cryptographic assumptions to be less secure.The experts stated that modern cryptography relies on the assumption that certain mathematical problems do not have efficient algorithms; if this assumption holds, no matter how powerful AI becomes, it cannot find algorithms that do not exist. This assumption is related to the unsolved P vs NP problem in computer science, and current AI advancements have not yet touched upon this issue.The experts believe that AI can significantly reduce the time required for cryptographic reviews. Hypotheses that previously took ten years to validate can now allow models to run for a month to attempt to break them. At the same time, the migration work driven by quantum threats has prepared for some of the risks posed by AI, and cryptographic agility can help systems switch methods when weaknesses are discovered. For developers, the most direct opportunity is to use AI to discover more vulnerabilities before software deployment.

The European Union is reviewing MiCA, with related consultations involving the requirement for developers of non-custodial Bitcoin wallets to obtain certification before providing software to the public. The European Securities and Markets Authority (ESMA) stated that open-source development, self-custody, automated smart contracts, and permissionless infrastructure should not automatically be considered regulated intermediaries.At the same time, ESMA proposed establishing new regulated services for crypto asset service providers that offer customers access to decentralized protocol services. This review has not changed the current rules, and the European Commission will assess the relevant opinions and submit a review report by June 30, 2027, in accordance with Article 140 of MiCA.

According to Bloomberg, the U.S. Department of Justice is reviewing whether Binance Holdings Ltd. has violated the settlement agreement reached with the U.S. government in 2023, while also investigating whether activities on the platform may involve violations of Iran sanctions.Tysen Duva, head of the criminal division of the U.S. Department of Justice, stated in an interview this week that officials are reviewing Binance's compliance with the 2023 agreement. He declined to discuss details and did not indicate that Binance violated the settlement agreement. Under the agreement, Binance agreed to pay a $4.3 billion fine, acknowledged violations of banking-related rules, and accepted enhanced compliance controls.

The International Monetary Fund has completed the second and third reviews of the $1.4 billion financing mechanism for El Salvador, disbursing $139 million and granting exemptions after the country violated Bitcoin holding limits.The International Monetary Fund currently expects that, aside from documented donations, the El Salvador government will not purchase more Bitcoin and will increase the transparency of public Bitcoin holdings.

According to Decrypt, Carli Michelle Heller, a woman from Bonita Springs, Florida, was arrested for using Claude as a diary. Investigators stated that she wrote about "shooting" the Lee County Sheriff's Office on September 26, and the next day claimed she had acquired a new gun. Anthropic's safety system flagged these conversations as serious, and the platform handed them over to a human review team, which reported to law enforcement. Officers then identified Heller, went to her residence, and detained her. She was charged with making written threats of violence, and the case is scheduled to go to court in November.Anthropic's consumer terms explicitly reserve the right to "decide on their own" to report user inputs, outputs, or behaviors to law enforcement. Its privacy policy, effective September 10, 2026, also allows the company to share data with police when it reasonably believes that disclosure is necessary to prevent serious harm. Even if users choose not to use their data for model training, Anthropic can still use their data within three months, rather than five years; conversations flagged for review will also be used to improve harmful content detection capabilities.This is not the first case. The San Francisco Standard reported in September that Anthropic had referred a user to the police, who allegedly wrote that they purchased an AR-15 rifle and had the company's CEO Dario Amodei in their sights, claiming it was just a joke. At the time of the report, the user had not been arrested or charged, and an Anthropic spokesperson stated that this was "our protective process working as intended."

According to a report by Semafor, the New York Federal Reserve has begun visiting JPMorgan Chase, Wells Fargo, Barclays, and Morgan Stanley to review their loan situations and risk exposures related to private credit companies.This review partly stems from JPMorgan Chase's move in March to write down a significant amount of loans in its private credit portfolio, particularly loans to software companies threatened by artificial intelligence.

According to Bitcoin News, Blink released a complete review of the attack incident on September 19: this attack resulted in the theft of a total of 6.61 BTC from 24 customer accounts. The company stated that the vulnerability has existed since October 2023, allowing any user with a free Blink account to gain customer service-level permissions, take over customer accounts, and increase withdrawal limits.The attackers also obtained partial information from 3,817 accounts, including some phone numbers and email addresses; names, identification documents, addresses, passwords, and mnemonic phrases were not leaked. The 24 stolen accounts had not enabled two-factor authentication. The attackers attempted to make 18 withdrawals from 9 accounts that had two-factor authentication protection, but all attempts were unsuccessful.Blink shareholders have fully compensated all affected customers. Approximately 5 stolen BTC were subsequently transferred via cross-chain exchange services. Blink is now offering a recovery reward of up to about 3.3 BTC, with half of any successfully recovered funds to be allocated to those providing valid leads and the Bitcoin circular economy.

According to Iranian media reports, Iran is reviewing a new proposal from the United States transmitted through Qatar. This proposal outlines a roadmap and timeline for final negotiations based on the Islamabad framework, but seeks to initiate nuclear talks sooner.Iran continues to insist that the United States must first fulfill its commitments, including sanctions relief and the release of frozen funds, with its seven main conditions remaining unchanged. Negotiations with Oman regarding a new shipping route in the Strait of Hormuz have also made progress.

According to HOGE Wire, the U.S. federal fiscal year will begin on October 1, 2026, without a budget, and the Securities and Exchange Commission (SEC) will enter a funding interruption status, halting the review of new cryptocurrency ETFs. Registration statements cannot be declared effective, and opinion letters will no longer be issued. Existing products are unaffected, and BlackRock's IBIT, Fidelity's FBTC, and Grayscale-related products can still be traded and continue to process subscriptions and redemptions.Cryptocurrency ETFs need to complete both the 19b-4 submitted to the exchange and the S-1 or N-1A submitted by the issuer; both paths are paused during the funding interruption. On September 17, 2025, the SEC approved general listing standards for commodity trust shares, allowing eligible products to submit 19b-4 without needing to do so individually, reducing the review time from about 240 days to approximately 75 days; leveraged, inverse, actively managed, lending, and staking products are not included in this template. The article states that as October approaches, there are over 90 pending applications, with some deadlines at the beginning of the month. Nate Geraci told Decrypt that what the industry refers to as ETF Cryptober may be temporarily shelved, which is a delay rather than a rejection.The article also states that on March 17, 2026, the SEC and the Commodity Futures Trading Commission jointly clarified that agreement staking does not constitute a securities offering or sale. BlackRock's Ethereum product ETHB is listed on Nasdaq with a fee of 0.25% and will distribute 82% of staking rewards to investors.