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NFT trading platform OpenSea posted on X that OpenSea Mobile is now open to all users. Users can view their assets, complete transactions, and interact with trading counterparts within the same application.OpenSea stated that the app covers categories such as emojis, artworks, trading cards, and perpetual contracts, supporting over 25 chains and all user wallets.

According to The Defiant, the cryptocurrency exchange MEXC announced that it will terminate services for users in Russia and Belarus. Affected customers will receive a separately set deadline to close positions and withdraw assets.MEXC stated that users who have not received the relevant notice can continue to use the exchange's services, but must comply with its terms.

According to NetEase's report on "DeepTech," the open-source AI programming tool OpenCode has officially confirmed it was breached, affecting approximately 1.4% of OpenCode Console users, with some API keys for models stored on the platform potentially leaked. Multiple developers reported unusual charges on accounts used to call models from OpenAI, Anthropic, and others, with some claiming losses of hundreds of dollars and others stating amounts exceeding $1,700. The officials stated that the incident is related to a large-scale distillation attack and are currently working with OpenAI, Anthropic, and Google to address the issue.OpenCode was developed by members of the Anomaly team, with one of the main creators being Dax Raad. The team has previously worked on projects like SST and OpenNext. In addition to local programs, its cloud service Console can centralize API keys from providers like OpenAI, Anthropic, and Google in a workspace and call them on behalf of users; the incident occurred on this cloud service. A notification email stated that the attacker gained unauthorized access to a set of decommissioned old systems, and some third-party model API keys in the Console workspaces may have been exposed. Developer Colin Parsons reported unusual charges of about $281 on his OpenAI account and about $168 on his Anthropic account, while Preston Zeller reported losses of around $1,700. Other users reported unusual charges of about $400 on Anthropic and account restrictions triggered by unusual usage on Google services.OpenCode has notified affected users to revoke and replace their keys and check recent call records. Lydia Hallie, a member of the Anthropic Claude Code team, stated that Anthropic has collaborated with OpenCode and revoked the Claude API keys believed to be affected. Tibo, a member of the OpenAI team, stated that they are working with OpenCode to help affected API users restore access and refund the amounts that were unusually consumed during the attack. Dax Raad clarified that the affected service is OpenCode Console, not the locally running OpenCode, and that keys configured directly in the local tool will not be sent to OpenCode servers. On October 18, he stated on social media that the attacker had been continuously attempting to breach the system for the past 48 hours, and the team is strengthening defenses.

Phoenix Technology cites a report from the Financial Times that on October 19, Beijing time, the AI company Anthropic is discussing with legal professionals how to enable AI agents to negotiate on behalf of users while adhering to reasonable negotiation rules to secure better deal terms. Two individuals familiar with Anthropic's thoughts stated that the company is seeking advice from law firms to understand how lawyers can balance client interests with fair negotiation outcomes. Anthropic declined to comment.The report mentions that as personal AI agent applications advance, related companies are beginning to consider allowing agents to communicate with each other to negotiate product prices, resolve customer service disputes, and even strive for better salary conditions on behalf of users. One person familiar with the related work stated that Anthropic is researching the negotiation norms that should be followed when models negotiate with each other, weighing factors such as how often to consult users during negotiations and how vigilant to remain against AI negotiation counterparts. Another individual close to the company mentioned that the company has also explored having users sign documents to confirm the tasks accepted by the agents and the rules they must adhere to.The Financial Times cites research released by Anthropic in April this year, stating that the policy and legal framework for AI models to conduct transactions on behalf of humans has yet to be established. This year, the company had the Claude agent negotiate around real goods and funds, and in a September experiment, employees bought and sold books through the agent, with agents employing tough strategies having a slight advantage in securing better outcomes. Harvard Business School Assistant Professor Michelle Vacharo conducted over 180,000 agent negotiations, covering scenarios such as employment contracts and lease agreements, and the research found that some agents attempted to induce the other party to disclose confidential information through prompt injections.

OpenCode stated that a security incident related to a large-scale model distillation attack occurred, affecting approximately 1.4% of OpenCode Console users.The affected range mainly involves some users connected to external model providers. OpenCode has notified all affected accounts via email; users who did not receive a notification are not included in this impact.

Arthur Hayes recently stated in an interview with The Rollup that the threat of quantum computing to cryptocurrencies is exaggerated, being a known and manageable risk rather than a reason to sell.Hayes believes that the truly practical protection lies in address hygiene, which means avoiding address reuse, using updated signature types, and so on. Most risks are concentrated among those who manage their addresses poorly. Hayes does not believe that quantum computing is a catalyst for panic or selling Bitcoin at this time.

Cryptocurrency exchange Bitget announced that it will terminate services for certain users, with different deadlines for different accounts. According to The Defiant, Bitget's terms of service list Russia, Belarus, and Kazakhstan as prohibited jurisdictions. An affected user stated that the service deadline for their account is October 21.

Cobo Wallet announced that its App service will officially close on December 1, 2026. Users must complete the transfer of all assets by November 30 at 23:59 and update the Cobo Wallet receiving address set on other platforms.The announcement reminds users that those who do not transfer their assets within the deadline will incur account management fees. This adjustment will directly affect users who are still using the Cobo Wallet App for asset storage and receiving payments; relevant users should promptly confirm their on-chain assets, receiving addresses, and withdrawal whitelist settings on associated platforms.After the App service is closed, if there are remaining assets in the account, Cobo will charge a monthly account management fee. The management fee is calculated based on the asset type, amounting to 2% of the remaining assets in the account, with a minimum charge equivalent to 100 USD per month. Users who fail to complete the asset transfer before the App closes will be deemed to have agreed to this fee arrangement.The announcement does not specify the exact reasons for closing the service, nor does it disclose whether other products or institutional businesses under Cobo will be affected.

According to The Bitcoin Historian, Charles Schwab, which manages approximately $13 trillion in assets, has announced that all customers can now directly purchase Bitcoin within their accounts, involving over 40 million U.S. users.In April, Charles Schwab announced the launch of its spot crypto trading service Schwab Crypto, which will be rolled out in phases, supporting BTC and ETH trading, with a fee of 0.75% per transaction, provided by Paxos for sub-custody and trade execution. This service is currently not available to residents of New York and Louisiana.

On October 16, GasFree announced that its user base has reached 500,871, with over 500,000 transactions supported. With GasFree, users can directly use USDT to pay transaction fees without needing to hold TRX as Gas; currently, this experience has been extended to USDD, and Binance Web3 Wallet also supports TRC-20 token transfers powered by GasFree.No need to prepare additional TRX, and no need to be distracted by Gas fees, GasFree is making on-chain transfers easier and smoother.

Lightning Labs announced the launch of LayerTree on the X platform, which is a non-custodial scaling solution based on Bitcoin that can connect with the Lightning Network.According to the introduction, LayerTree utilizes Covenants technology, allowing a single UTXO to be shared by up to 1 million users. Users do not need to stay online to receive funds and can exit at any time through a single transaction, with funds not expiring due to timeouts.

Crypto.com Exchange announced the launch of Predict Pro, a prediction market trading platform for real-world events aimed at U.S. users.The product supports real-time order books, multiple order types, and prediction combination trading of 2 to 6 items, covering events such as sports, elections, and cryptocurrency prices.

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 The Block, Starknet developer StarkWare has officially opened its privacy trading service OffMarket to the public, allowing users to trade on Polymarket without publicly associating their positions with their accounts.The service has been undergoing limited testing since August, operating based on Starknet's zero-knowledge technology and shared privacy pool. Currently, the USDC deposit limit for each account is set at $1,000, and StarkWare has stated that it will adjust this limit based on demand and usage. Orders are still executed on Polymarket, facing the same buyers and sellers and market prices.OffMarket is completely non-custodial, with users' private keys stored in the browser, and funds held in Starknet's open-source privacy pool. Polymarket positions are held in contracts by wallets derived from user signatures. OpenZeppelin completed an audit of the privacy pool contract in June, finding no serious or high-risk issues, and StarkWare completed formal verification the following month. StarkWare co-founder and CEO Eli Ben-Sasson stated that the project stems from his long-term investment in the field of financial privacy and mentioned that OffMarket is bringing zero-knowledge technology to Polymarket.A spokesperson for StarkWare stated that OffMarket still cannot prevent others from identifying traders through transaction size or timing, and the market, prices, and transactions themselves remain public. Transfers of USDC from the shared pool to new wallets can also be seen.

According to Bitcoin News monitoring, a German Ledger user @jayr_crypto reported receiving a forged letter again this week. The letter impersonates Ledger, claiming that new regulations require users to register their Bitcoin wallets through a service called ZenLedger by October 31. The letter uses Ledger's official branding elements and mentions German financial regulators, while also including a QR code that directs users to a so-called mandatory registration process.The user believes that addresses exposed in a previous data breach are being used for targeted attacks on Ledger users. In the same week, Ledger coordinated with MediaMarktSaturn to suspend the sale of its hardware wallets in a European retail network covering 11 countries and over 1,000 stores.Earlier reports indicated that malicious spy implants were found inside Ledger devices purchased from European retailers. Ledger confirmed separately that compromised devices sold by a Southeast Asian distributor contained implants capable of stealing recovery phrases and transmitting them over cellular networks. Ledger has not confirmed any breaches of devices in Europe. Ledger users are currently facing physical supply chain tampering and targeted phishing attacks initiated using home addresses. Do not scan suspicious QR codes or enter recovery phrases.

According to The Guardian, former BitMEX investor Lewis Barber has filed a lawsuit in the High Court of England, claiming £20 million, accusing the exchange of offering cryptocurrency derivatives to UK investors without authorization from the Financial Conduct Authority (FCA).Barber stated that he traded derivatives offered by BitMEX from 2018 to 2022 and incurred losses of approximately £20 million in Bitcoin, now seeking the return of the relevant Bitcoin or equivalent compensation.

Robinhood announced that its social trading network is now open to all eligible users in the United States. CEO Vlad Tenev stated on October 13 that this feature is built into the app's information feed, centered around users' trades and performance. Users can follow other traders, view shared account activities, and initiate eligible trades directly from posts through the Quick trade feature. Tenev mentioned that Robinhood Social is now available to everyone, allowing users to share charts, profits and losses, and portfolio allocations, as well as receive news and company updates.This feature was previously tested starting on March 18, initially for 1,000 customers who attended the HOOD Summit, followed by an additional 10,000 in the subsequent weeks. The early version provided verified trading posts, daily and yearly profit and loss statistics, and the ability to place orders manually from the information feed; news feeds are part of future planning. Sharing is selective: trades will not be automatically published, and customers can choose which eligible trades to publish, as well as disable trading statistics in their profiles.Access and publishable content are restricted. Social is only available in the United States, and Robinhood excludes licensed securities professionals, individuals associated with regulated financial institutions, and the company's own employees. Its help page indicates that futures and multi-leg options trades currently do not meet publishing criteria. Tenev stated that Social will be coming to Robinhood's desktop trading platform Legend in the coming weeks.

According to official news, Starknet announced the launch of shadow accounts, allowing users to participate in public DeFi activities through an independent address controlled by themselves, while keeping the association between this address and the main wallet confidential.Shadow accounts are independent pseudonymous addresses on Starknet, with funds sourced from the user's protected STRK20 balance. The first integration will go live tomorrow. The balance, transaction records, and holdings in various applications of the shadow account will still be publicly visible on-chain, but STRK20 can protect the association information between the shadow account and the user's main wallet. This means that users do not need to hide their DeFi activities themselves, while also reducing the likelihood of external observers tracing related activities back to their main wallet.

Ledger stated on platform X that it has coordinated with German retailer MediaMarkt Saturn to suspend the sale of Ledger devices both online and in physical stores to assist with the relevant investigation.Previously, a German user reported finding a suspected implant in the device they purchased. There have been no reports of financial loss, and Ledger has stated that there are no signs that its infrastructure, systems, or services have been compromised. Ledger customer service is reviewing the reports submitted by users, and its cybersecurity team Donjon will inspect the received devices.Ledger reminds users that if they have any questions about their purchased devices, they can contact the support team through the official customer service website. Ledger will never proactively call or message users, nor will it ask for the 24-word recovery phrase.Many claims and data circulating online have not been verified, and scammers may exploit such incidents to carry out fraud. Users should obtain the latest information only through official channels of Ledger and MediaMarkt Saturn.