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Polymarket trader Car posted on platform X that approximately $800,000 in assets from his Polymarket account were stolen, all positions were sold, and his friend's account was hacked for about $600,000. He reminded users to lock their accounts and refrain from interacting with the website for the time being.Additionally, several users reported on platform X and the Polymarket Discord community that the website's front end appeared to be under attack, with assets being transferred out without authorization. Some users claimed to have lost around $200,000, while others reported receiving unauthorized withdrawal signature requests on the official website. As of the time of publication, Polymarket officials have not yet responded. In June of this year, Polymarket was previously targeted by a phishing attack on the front end due to a third-party vendor being compromised, resulting in the theft of approximately $2.94 million in user assets.

Due to the detection of increased attempts of network attacks, the Indonesian cryptocurrency exchange Indodax has temporarily suspended user deposits and withdrawals to conduct security assessments and risk mitigation work.The platform stated that currently, user asset security is intact, and no unauthorized withdrawals or data breaches have been detected. The deposit and withdrawal services will resume once the system security is confirmed, and further updates will be released through official channels.

The Singapore Police Force issued a warning on Wednesday, stating that since September 10, they have received at least two reports involving tampered Ledger hardware wallets, resulting in a total loss of approximately 3.5 million Singapore dollars, equivalent to about 2.7 million US dollars. Preliminary investigations found malicious hardware components in Ledger wallets purchased from certain retail stores in Singapore.The incident only came to public attention on October 9, involving devices sold through authorized dealers CryptoBilis in Indonesia, Malaysia, and the Philippines. Subsequently, former Mt. Gox CEO Mark Karpelès stated that a Ledger Flex purchased at Singapore airport contained a spy implant. Another user reported acquiring a tampered device from local IT retailer Challenger, and later received a new device sent by Ledger.On October 13, Ledger requested retailers in Indonesia, Singapore, Thailand, the Philippines, Vietnam, Malaysia, and Hong Kong to suspend sales of their devices pending the completion of the investigation. The Singapore police stated they are in contact with Ledger, which is reviewing the affected cases, and the police investigation is ongoing.

According to a statement released by Predict.fun on the X platform, a small number of user wallets experienced unauthorized fund transfers, with total losses amounting to approximately 400,000 USDT. Preliminary investigations indicate that an API documentation website hosted by a third-party service provider may have been compromised, affecting a small number of users in a short period.The website has been taken offline and will remain closed until the investigation is complete. Predict.fun promises to fully compensate users who have directly suffered losses due to this incident and will release a complete review report and subsequent preventive measures after the investigation concludes. Predict.fun is a prediction market platform based on the BNB Chain.

According to Scam Sniffer monitoring, a user reportedly lost approximately 1.58 million dollars on Ethereum and Base due to a private key leak.

According to CoinDesk, the Indian cryptocurrency exchange CoinDCX has confirmed a loss of $16 million. The reason is that its fund sweeping process failed to transfer customer deposits from the wallet that was hacked in July 2025.The exchange stated that it will bear this loss itself and claimed that the funds of active users are still safe.

According to Slow Fog monitoring, Yapeswap suffered an attack, resulting in a loss of approximately $21,900. The root of the incident lies in the WorkersUnion governance mechanism, where the quorum requirement is zero, allowing a proposal that received only about 0.000055% voting support to transfer the feeToSetter authority of YapeFactory to the attacker.The attacker subsequently deployed a malicious Registry contract, causing latestVault() to return a forged vault address, while vaults() still listed the real vault. YapePair accounted for the deposits to be transferred as farm assets, but did not receive redeemable shares, ultimately leading to a loss of funds. This incident involves contracts such as YapeFactory, YapePair, and YapeWrapper.

According to the Financial Times, as the artificial intelligence hype cools down, the California Public Employees' Retirement System (CalPERS) has decided to withdraw from large tech stocks.

The credit risk indicators of Meta Platforms have soared to an all-time high, and bond prices have fallen. The company plans to increase capital expenditures, raising market concerns about the rising debt for AI infrastructure.The five-year credit default swap prices rose by 8.9 basis points, reaching approximately 119.3 basis points per year. Meta stated it will invest about $825 billion in AI-related leases and contracts.

Zipcoin announced that it has ceased operations, stating that the project’s code repository and related keys have been fully compromised, and attackers may control the project’s wallets and infrastructure. The team indicated that they attempted to migrate the code and rotate credentials in the past 12 hours but failed to find a viable security solution.Zipcoin also disclosed that the project was affected by the UNCX incident on October 15, where hackers stole approximately 1.1% of the supply of multiple Ethereum tokens, including ZC, PAAL, and EDGEN, and sold them on the open market. The team subsequently attempted to buy back tokens from the market to compensate for the token shortfall corresponding to future team commitments.

SlowMist released a security alert stating that NEM suffered an attack, resulting in a loss of approximately $821,920. The root cause lies in NemTokenV2 recording the tokens transferred to the liquidity pool (LP) as sell volume without verifying the exchange settlement.The attacker exploited this vulnerability, executing the transfer, calling skim() to clear the incoming tokens, and calling flushLpSellRecycle() a total of 42 times, destroying the original reserves of the liquidity pool and lowering the NEM reserve balance, and then selling the remaining NEM at an inflated price to withdraw USDT.

On October 21, Stripe and Anthropic announced in San Francisco and Dublin that Anthropic has integrated Link's agent wallet and Stripe MCP into Claude Duet. Claude Duet is a new application launched in research preview form, aimed at small business owners and professionals for tracking to-do items and completing tasks delegated by users.Business owners can have Claude Duet use Link to purchase items online such as digital ads, business cards, team lunches, or whiteboard markers. Each purchase must be approved by the user before Claude completes the transaction using a virtual card. Through Stripe MCP, users can also send invoices and payment links, manage products and pricing, analyze revenue, and process refunds without leaving the application.Kevin Miller, Head of Payments at Stripe, stated that business owners want agents to handle tasks such as ordering supplies or invoicing clients, and Link's agent wallet along with Stripe MCP allows Claude Duet to take on more daily tasks while keeping control with the business owners. Rahul Patil, Chief Technology Officer of Anthropic, mentioned that when agents start handling actual work for people, trust in financial transactions becomes even more crucial. The purchases made by Claude Duet are built on Link, allowing users to maintain control over every dollar. Link has provided payment capabilities for over 200 individual agents, including Meta's Muse, SpaceXAI's Grok Bot, and Instinct.

According to the Wall Street Journal, Iran had stored millions of barrels of crude oil on dozens of tankers to generate cash, but as of mid-October, these reserves have been completely depleted. Kpler analysts noted that the U.S. Navy's blockade has hindered Iran's ability to replenish its crude oil supplies.

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 data recently released by financial data provider FnGuide, as of October 15, the total estimated value of shares held by the National Pension Service (NPS) in 287 listed companies with a holding ratio of 5% or more has shrunk from 515.93 trillion Korean won at the end of June to 333.53 trillion Korean won, a decrease of approximately 182 trillion Korean won, equivalent to about 13.7 billion USD.The shrinkage is mainly related to the fund's heavy holdings in Samsung Electronics and SK Hynix. The market value of SK Hynix held by NPS has evaporated by approximately 74.2 trillion Korean won, while the market value of Samsung Electronics has decreased by 56.9 trillion Korean won, with these two stocks accounting for about 72% of the total decline in market value.NPS is the largest pension fund in South Korea, managing assets worth 1866 trillion Korean won, approximately 1.35 trillion USD, as of the end of June. The investment return rate in the first half of this year reached 27.2%, the best level for the same period since 2022, but the market reversed in just a few months, marking the first quarterly decline in market value for its core heavy holdings since the fourth quarter of 2024.NPS has long listed Samsung Electronics and SK Hynix as its top two domestic stock holdings, maintaining a holding ratio of over 7%. In May of this year, the fund's operating committee also raised the year-end target allocation for Korean stocks. After reaching a peak in June, stock prices quickly corrected, and by mid-October, SK Hynix had fallen more than 50% from its peak, while Samsung Electronics had retreated about 40%.The concentrated sell-off by foreign investors has been the direct driver of the decline, with the two companies accounting for nearly 80% of the total net selling by foreign investors. Market discrepancies regarding AI storage prosperity, advancements in Chinese storage technology, and the high volatility of individual stock leveraged ETFs have also amplified the declines. The KOSPI index in South Korea reached a historical closing high of 9114.55 points on June 22, but had fallen by about 39% as of October 15. During this period, NPS's holding ratio of SK Hynix shares decreased from 7.5% to 7.32%, while the holding ratio of Samsung Electronics remained at 7.84%.Bank of America’s research report on October 16 suggests that the valuation of storage stocks may have bottomed out after about three and a half months of adjustment, and that storage chip prices and profits are still expected to remain high from 2027 to 2028. There are also views warning that if global AI companies cut capital expenditures, there may still be room for downward adjustments in the earnings expectations of the two companies. As of now, NPS has not made a formal response regarding the significant shrinkage in market value of its holdings.

According to The Block, TD Cowen analysts have raised the target price for Bitcoin treasury company Strive from $44 to $56, maintaining a "Buy" rating. Analysts Lance Vitanza and Jonnathan Navarrete noted that the amount of Bitcoin purchased by Strive in the past two weeks has exceeded their previous expectations for the entire fourth quarter.The company's Bitcoin holdings increased from 28,000 coins at the end of September to 35,595 coins (worth approximately $2.9 billion), a net increase of nearly 7,600 coins, far exceeding TD Cowen's original estimate of 4,750 coins. Strive has now jumped to fourth place among publicly traded companies in terms of Bitcoin holdings, slightly surpassing MARA. Additionally, Strive plans to expand its preferred stock issuance to 7 million shares (at $90 per share), aiming to raise $630 million to continue increasing its Bitcoin holdings without diluting common stock. The issuance is expected to be completed on October 20.

According to Gate market data, Strategy (MSTR) has expanded its decline to 6.46%, with a current price of 141.5 USD.On the news front, MSCI plans to adopt new regulations that will filter out companies whose asset structures and operational characteristics are more similar to investment funds rather than traditional operating enterprises, based on the proportion of operating assets and multiple financial ratio tests. Strategy has been listed as a potential candidate for removal due to its extremely high proportion of Bitcoin assets. The final list of affected companies is expected to be announced on November 11.The market believes that if MSTR is removed from the MSCI related indices, passive funds tracking these indices will be forced to reduce their holdings of its stock, potentially creating billions of dollars in selling pressure and posing a challenge to its model of continuously increasing Bitcoin holdings through equity financing.

Lily Liu, the chair of the Solana Foundation, stated in a post on October 16 that they showcased Solana on a large screen because of their deep affection for the Chinese community and gratitude for the warm welcome from the Chinese community. The display refers to the light show on the entire exterior wall of the Citibank building in Lujiazui, Shanghai on the evening of October 14.She mentioned that due to the publicity, the number of registrations for the Solana Shanghai event quadrupled overnight, far exceeding the limit reported to local government departments, and it could not prevent people from flooding the venue. To comply with local requirements, the event will be postponed and will be held when it can better accommodate the size of the community. She apologized to those who came from near and far wanting to participate in the Shanghai Solana event.