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Xiaohongshu fully acquired the AI travel tool Circumference Travel's affiliated company. The latest business information shows that Xiaohongshu Technology Co., Ltd. has become the sole shareholder of Chaochao Shishi Technology (Shanghai) Co., Ltd., with former shareholder Zheng Yifan exiting. Circumference Travel provides a "one-click homework copying" feature, allowing users to paste links of notes from Xiaohongshu and public account travel guides, after which the AI can extract attractions and restaurants, generate a map route, estimate transportation time, and support collaborative itinerary modifications with friends. QuestMobile data shows that in February this year, its monthly active users reached approximately 2.49 million, a year-on-year increase of 384.7%, ranking among the top ten travel service apps, with users aged 25 to 35 accounting for 72.1%.By the end of 2025, the Circumference Travel team had stated that they would not engage in flight and hotel bookings. In September of this year, the app added features for AI querying flight, hotel, and ticket prices, allowing users to directly jump to partner platforms for booking after reviewing their itinerary, and check order status within the app. Last year, Xiaohongshu also acquired the development entity of its AI search product Diandian. Diandian is used to help users find destinations and filter activities, while Circumference Travel can organize promotional notes into executable itineraries and guide users to make bookings.

According to The Block, the modular data availability layer Avail has announced the launch of the privacy perpetual contract trading platform ShieldTX, aimed at helping large traders cut off the public data chain and avoid being tracked by Order Tracking bots on Hyperliquid. ShieldTX is built on Avail's infrastructure, allowing users to deposit USDC from major EVM chains through Nexus and generate a brand new shielded wallet when opening a position, with orders directly routed to Hyperliquid's native order book.When users close their positions, funds will return to their shielded balance. Observers can see the deposits but cannot associate subsequent trading activities with the source wallet of the funds. Avail states that Order Tracking bots can replicate trades within seconds based on public data, and their subsequent trading volume can drive up prices, which is unfavorable for large orders. According to its analysis, ShieldTX can save 15 to 25 basis points per trade by breaking the public data chain, which significantly compounds savings for high-frequency large traders.ShieldTX also launched a wallet scanner that displays the public data relied upon by Order Tracking bots and reveals how trades are affected. Users can scan wallets to see who is copying their trades. In terms of underlying architecture, ShieldTX operates on a zkAppchain called Nightshade, where users deposit USDC into an Arbitrum settlement contract and receive equivalent receipts within Nightshade.However, currently, receipt management is handled by the sorter, which can see the receipt pre-images and user states; the positions on Hyperliquid remain publicly visible, and designated solvers are also aware of the position addresses they need to fund.

The Ethereum Foundation forwarded tweets related to the privacy tool Kohaku, expressing support for the development of privacy-protecting wallet tools. In response to the attacks and exploits that occurred over the past week, the Ethereum Foundation pointed out that privacy and security should not be viewed as mutually exclusive goals. Setting privacy protection as a default feature helps reduce the risk of attackers exploiting users' on-chain historical records to carry out attacks.According to developer Jordan Enev, the Kohaku team is working to make privacy protection a standard feature of Ethereum. Currently, its SDK has integrated privacy protocols such as Railgun, Privacy Pools, and Tornado Cash, with development progress becoming increasingly mature, and they are calling for more wallets to promote related integrations.

The developer tools AI visibility and usability platform AgentRel announced on X the completion of a $1.3 million financing round, with investors Y Combinator and Broom Ventures. The funds will be used to build AgentRel.The announcement stated that AgentRel helps developer tool companies see whether ChatGPT, Claude, or Gemini would recommend their products or competitors' products, and identifies the difficult points users encounter when using Claude Code. The announcement also mentioned that Profound, Peec, and most other AI visibility tools primarily measure volume, while AgentRel provides accurate data and helps users take action based on that.

Ant Group released Lingguang 2.0, which connects data and services within the Alipay ecosystem and supports the use of tools such as MCP and CLI in an open environment, expanding cross-platform collaboration capabilities.Currently, Lingguang has integrated capabilities for Alipay bills, memberships, travel, as well as services like DingTalk, Feishu, email, and Mijia. The management scope is extending from personal information and online affairs to cross-platform workflows and smart home device control. The Lingguang App is a fully modal general AI assistant launched by Ant Group, officially going live on November 18, 2025.

Zcash Labs announced the launch of the JavaScript SDK Zcash JS, which developers can use to build web, server, and mobile applications based on Zcash. The official statement mentions that applications that can be developed include wallets, light clients, and data dashboards.Zcash Labs stated that it will continue to maintain Zcash JS and build supporting tools and code library ecosystems around it. Project documentation and the GitHub code repository have been made publicly available.

According to Fortune, Robinhood Ventures has invested 10 million dollars in the AI programming tool company Cognition. Earlier this year, Robinhood Ventures had already invested 75 million dollars in OpenAI.This reinvestment in Cognition signifies its multi-target layout strategy in the field of AI development tools.

According to local media Digital Asset in South Korea, the South Korean government and central bank are promoting amendments to the country's foreign exchange market law to regulate stablecoins as a payment tool.South Korea is currently formulating the "Basic Law on Digital Assets," which will establish an exchange licensing system and formulate rules for the issuance of stablecoins.

According to CoinDesk, Dogecoin Labs was established with the support of the Dogecoin Foundation, integrating the MyDoge wallet, DogeOS application platform, and Such App payment products into a single independent organization, with Jordan Jefferson serving as CEO. The company will focus on consumer applications, payments, commerce, DeFi, and gaming, while the foundation will continue to be responsible for ecosystem maintenance and open-source development.According to the plan, developers can build applications on DogeOS, DOGE holders can discover and use these applications through MyDoge, and merchants can accept payments via Such App. The beta version of Such App currently supports invoice and offline QR code payments, but the connection with DogeOS is still in the planning stage.MyDoge stated that its user base has exceeded 500,000. DogeOS opened its public testnet on September 30, allowing developers to use test DOGE to build lending, trading, and gaming applications similar to Ethereum. However, the secure connection between DogeOS and the Dogecoin mainnet has not yet been completed, and the related rule modifications are still in draft stage.

According to TechCrunch, the AI meeting tool Otter.ai has secured $320 million in funding from Customer Value Fund (CVF) under General Catalyst. This funding will not dilute the company's equity, and CVF will earn returns through the performance generated by Otter.ai's marketing investments.Otter.ai plans to use the funds for business growth, market expansion, international expansion, and product innovation.

According to "Du Jia," the Meituan AI team has launched the AI Agent skill platform DeepSkill, which currently includes over 370,000 validated Skill tools that have been tested through real tasks, nearly doubling from 130,000 at the beginning of September.The platform does not use a traditional directory search model; users can directly describe their task requirements, and the platform automatically breaks down and matches candidate Skills from the library. The platform will scan and analyze all content of the Skills, outputting an analysis report that includes capability boundaries, tool invocation, potential risks, and data security reviews. It also features trend rankings on GitHub, authoritative source rankings, and market hot search rankings. Currently, major companies such as Tencent, ByteDance, and Alibaba have made arrangements in the Skill platform field.

Financial Associated Press, October 20 - Amazon launched the open-source tool TorchNeuron on the 19th local time, aiming to lower the barrier for developers to transition from NVIDIA chips to its self-developed chips, challenging NVIDIA's software barrier built on CUDA. According to reports, this tool allows AI code written in PyTorch to run on Amazon's self-developed AI chips without the need for rewriting. PyTorch is maintained primarily by Meta and is described as an open-source framework used by most AI developers.Amazon's chip design department, Annapurna Labs, introduced that with TorchNeuron, developers only need to modify one configuration to run the same code on the self-developed Trainium chip. Amazon announced the launch of this tool on the 19th local time and plans to publicly release it in a free open-source format at the PyTorch conference in San Jose, California on the 20th.Colin Brace, Vice President of Software at Annapurna Labs, stated in an interview that the launch of TorchNeuron is intended to reduce the steps required for developers to try Amazon's self-developed chips, starting from the customers' existing workflows. He revealed that over 30 early customers are already using it, covering fields such as robotics, world models, and voice AI, and mentioned that switching to Amazon chips can save costs.

According to The Block, payment company Mastercard has launched the Stablecoin Security tool to screen for fraud and sanction risks in stablecoin payments.This tool is aimed at stablecoin payment scenarios, helping relevant institutions identify fraudulent activities and sanction compliance risks during transaction processing. Mastercard did not disclose more product parameters and launch scope in the summary of the report.

Binance founder Zhao Changpeng responded on the X platform regarding the recent mass deletion of old tweets, stating that he was merely testing an AI tool to clean up past retweeted content and did not delete any original posts, so there is no need for the outside world to overinterpret.

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.

According to Cointelegraph, security company Hacken disclosed that there were a total of 107 cryptocurrency hacking incidents in the third quarter of 2026, with total losses amounting to $1.18 billion. Approximately $906 million (about 77%) were related to breaches of vendor and developer tools, disclosed but undeployed fixes, and infrastructure outside the audit scope.The losses were mainly concentrated in four incidents: Bitget lost $387 million, Liquid Network lost $320 million, Tectonic lost $120 million, and Coldcard firmware vulnerabilities resulted in losses of about $115 million, totaling about 80% of the losses. The remaining 98 incidents each had losses below $10 million, with a median of $670,000. Smart contract attacks were the most common, totaling 71 incidents with losses of $228 million. This quarter marked the worst losses since the first quarter of 2025. In terms of recovery, about $387 million was returned or reversed, accounting for approximately 33% of the gross losses; the operators also bore $410 million in user losses, with about $384 million still unrecovered.

The founder of the hardware wallet OneKey, Yishi, announced the launch of a tool to detect whether hardware wallets have been tampered with, called tampered.app. Users can upload photos of the circuit board for detection, supporting OneKey, Ledger, and Trezor, free of charge, without registration, and without saving photos.The tool can mark suspected anomalies, but a normal result does not guarantee complete safety. Yishi stated that tests on approximately 400 photos submitted by users showed an accuracy rate of over 95%.

The free and open-source tool REA (Reverse Engineer Anything) saw its star count on GitHub rise from less than 10,000 on October 6 to over 100,000 by October 12, with more than 30,000 added in a single day on October 11. This tool integrates AI programming assistants like Claude Code and OpenAI Codex with professional reverse engineering suites like Ghidra, bridging the model context protocol MCP launched by Anthropic. Since its creation in April of this year, REA had long gone unnoticed; its readme file states that the tool does not claim to restore original source code or automatically clone applications, nor does it come with a decompiler.REA has been used for various reverse engineering attempts on software and games: players have made Spider-Man swing through Gotham City in "Batman: Arkham City," someone stuffed about 1,600 items from "Minecraft" into "Elden Ring" to battle Boss Malenia, and mod authors have brought firearms and menus from "Escape from Tarkov" into "The Elder Scrolls V: Skyrim." Old console exclusives are also breaking free from their platforms; in September, enthusiasts used open-source AI models and recompilation tools to bring "Fable 2," which had never been released on PC, to Windows, with AI completing the startup in about an hour, followed by a long manual fix; another developer has made "GTA 5" run natively and smoothly on iOS.

According to TASS, Kirill Tsarev, the First Deputy Chairman of the Executive Board of Sberbank, stated that the bank has noticed a significant interest from a large number of customers in cryptocurrencies, which have become an indispensable part of the global market.