{ "version": 1, "event_id": "evt_33bf5aa7f506fb06", "url": "https://xiyu.news/events/evt_33bf5aa7f506fb06/", "json": "https://xiyu.news/api/events/evt_33bf5aa7f506fb06.json", "type": "security_incident", "status": "monitoring", "category": "crypto", "title": { "zh": "Arbitrum因紧急安全行动暂停新的Stylus激活", "en": "Arbitrum Pauses New Stylus Activations in Emergency Security Action" }, "current_state": { "zh": "Arbitrum已于10月2日通过安全委员会紧急暂停Arbitrum One和Nova上的新Stylus激活，原因是通过手写WebAssembly进行的AI辅助攻击风险上升。现有Stylus程序可继续运行并续期，普通Solidity合约不受影响；暂停通过提高激活Gas费实现，无需升级ArbOS。未发现可盗取用户资金的攻击。BoLD一步证明防护机制可在接受矛盾证明时延迟未确认的提款，但需满足冲突条件才会暂停结算。恢复激活的日期未定。", "en": "Arbitrum paused new Stylus activations on Arbitrum One and Nova on October 2 via Security Council emergency action, citing rising risks from AI-assisted attacks via hand-crafted WebAssembly. Existing Stylus programs keep running and can be renewed; ordinary Solidity contracts unaffected. Pause implemented by raising activation gas to prohibitively expensive level, no ArbOS upgrade. No attack enabling theft of user funds discovered. BoLD one-step proof guard can delay unconfirmed withdrawals if conflicting proofs accepted, but pause of settlement depends on condition. No date for restoring activations." }, "first_seen_at": "2026-10-02T22:01:57.893871+00:00", "last_updated_at": "2026-10-03T14:01:57.086790+00:00", "last_material_change_at": "2026-10-03T09:59:25.049917+00:00", "confidence": 0.75, "updates_count": 2, "sources_count": 3, "entities": [ "action", "activations", "arbitrum", "emergency", "new", "pauses", "stylus" ], "identifiers": [], "topics": [ "arbitrum", "bold", "layer-2", "protocol-security", "stylus", "wasm" ], "updates": [ { "update_id": "upd_f8b35b3dfba20f3e", "event_id": "evt_33bf5aa7f506fb06", "occurred_at": "2026-10-02T21:46:54Z", "published_at": "2026-10-02T21:46:54Z", "first_seen_at": "2026-10-02T22:01:57.893871Z", "time_precision": "published", "update_type": "initial", "material_change": true, "title_zh": "Arbitrum因紧急安全行动暂停新的Stylus激活", "title_en": "Arbitrum Pauses New Stylus Activations in Emergency Security Action", "what_changed_zh": "Arbitrum已作为紧急安全措施暂停新的Stylus激活。此外，一项新的BoLD防护机制若接受相互矛盾的证明，可能会延迟尚未确认的提款。\n\n此次暂停使新的Stylus合约无法在Arbitrum上激活，而现有合约仍可继续运行和续期；同时BoLD防护机制引入了一条新路径，可能使等待确认的提款被延迟。\n\n现有活跃合约仍可继续运行和续期。此次行动中没有用户资金损失的报道。", "what_changed_en": "Arbitrum paused new Stylus activations as an emergency security measure, while a new BoLD guard could delay unconfirmed withdrawals if contradictory proofs are accepted.", "current_state_zh": "Arbitrum已作为紧急安全措施暂停新的Stylus激活。此外，一项新的BoLD防护机制若接受相互矛盾的证明，可能会延迟尚未确认的提款。\n\n此次暂停使新的Stylus合约无法在Arbitrum上激活，而现有合约仍可继续运行和续期；同时BoLD防护机制引入了一条新路径，可能使等待确认的提款被延迟。\n\n现有活跃合约仍可继续运行和续期。此次行动中没有用户资金损失的报道。", "current_state_en": "Arbitrum paused new Stylus activations as an emergency security measure, while a new BoLD guard could delay unconfirmed withdrawals if contradictory proofs are accepted.", "detailed_summary_zh": "Arbitrum paused new Stylus activations as an emergency security measure, while a new BoLD guard could delay unconfirmed withdrawals if contradictory proofs are accepted.", "detailed_summary_en": "Arbitrum paused new Stylus activations as an emergency security measure, while a new BoLD guard could delay unconfirmed withdrawals if contradictory proofs are accepted.", "background_zh": "Stylus是Arbitrum的智能合约系统，允许开发者使用可编译为WebAssembly的语言（如Rust、C和C++）编写兼容EVM的合约。BoLD（Bounded Liquidity Delay，有界流动性延迟）是Arbitrum的争议协议，用于实现无需许可的验证，目前已部署在Arbitrum One、Arbitrum Nova和Arbitrum Sepolia上。", "background_en": "Stylus is Arbitrum's smart contract system that lets developers write EVM-compatible contracts in languages compiling to WebAssembly, such as Rust, C and C++. BoLD (Bounded Liquidity Delay) is Arbitrum's dispute protocol enabling permissionless validation, and it is active on Arbitrum One, Arbitrum Nova and Arbitrum Sepolia.", "community_discussion_zh": "", "community_discussion_en": "", "market_impact_zh": "Arbitrum是规模最大的Layer 2网络之一，因此暂停新的Stylus激活会影响面向开发者的合约部署流程，而BoLD防护机制则涉及提款与跨链桥环节，未确认的提款可能被放慢。市场反应主要通过ARB情绪以及用户和开发者对Arbitrum跨链桥延迟的信心传导。", "market_impact_en": "Arbitrum is one of the largest Layer 2 networks, so a pause on new Stylus activations affects the developer-facing contract deployment pipeline, while the BoLD guard touches the withdrawal and bridging segment where unconfirmed exits could be slowed. Any market reaction would transmit mainly through sentiment toward ARB and through user and developer confidence in Arbitrum bridge latency.", "importance_score": 7.5, "references": [ { "url": "https://www.tokenpost.com/news/technology/26489", "title": "Arbitrum Halts New Stylus Activations and Adds a BoLD Guard" }, { "url": "https://docs.arbitrum.io/stylus/gentle-introduction", "title": "A gentle introduction to Stylus - Arbitrum Docs" }, { "url": "https://docs.arbitrum.io/how-arbitrum-works/bold/gentle-introduction", "title": "Overview of BoLD | Arbitrum Docs" } ], "confidence": 0.75, "story_ids": [ "rss:thedefiant.io_api_feed:a130f735314650d9" ], "sources": [ { "url": "https://thedefiant.io/news/security/arbitrum-pauses-new-stylus-activations-in-emergency-security-action", "label": "The Defiant", "source_type": "rss", "official": false } ] }, { "update_id": "upd_9573d5efff2f95c1", "event_id": "evt_33bf5aa7f506fb06", "occurred_at": "2026-10-03T09:50:30Z", "published_at": "2026-10-03T09:50:30Z", "first_seen_at": "2026-10-03T09:59:25.049917Z", "time_precision": "published", "update_type": "confirmation", "material_change": true, "title_zh": "Arbitrum因AI辅助攻击风险暂停新的Stylus激活", "title_en": "Arbitrum pauses new Stylus activations over AI-assisted attack risks", "what_changed_zh": "新报道补充了暂停范围（Arbitrum One和Nova）、原因（AI辅助攻击通过手写WebAssembly）、通过提高激活Gas费至天文数字实现暂停、无需升级ArbOS、现有Stylus程序可继续续期、未发现可盗取用户资金的攻击、BoLD防护条件等细节。", "what_changed_en": "New report adds details: pause applies to Arbitrum One and Nova; attributed to AI-assisted attacks via hand-crafted WebAssembly; implemented by raising activation gas to prohibitively expensive level; no ArbOS upgrade; existing Stylus programs can use keepalive renewal; no attack enabling theft of user funds discovered; BoLD guard condition.", "current_state_zh": "Arbitrum已于10月2日通过安全委员会紧急暂停Arbitrum One和Nova上的新Stylus激活，原因是通过手写WebAssembly进行的AI辅助攻击风险上升。现有Stylus程序可继续运行并续期，普通Solidity合约不受影响；暂停通过提高激活Gas费实现，无需升级ArbOS。未发现可盗取用户资金的攻击。BoLD一步证明防护机制可在接受矛盾证明时延迟未确认的提款，但需满足冲突条件才会暂停结算。恢复激活的日期未定。", "current_state_en": "Arbitrum paused new Stylus activations on Arbitrum One and Nova on October 2 via Security Council emergency action, citing rising risks from AI-assisted attacks via hand-crafted WebAssembly. Existing Stylus programs keep running and can be renewed; ordinary Solidity contracts unaffected. Pause implemented by raising activation gas to prohibitively expensive level, no ArbOS upgrade. No attack enabling theft of user funds discovered. BoLD one-step proof guard can delay unconfirmed withdrawals if conflicting proofs accepted, but pause of settlement depends on condition. No date for restoring activations.", "detailed_summary_zh": "Arbitrum's Security Council paused new Stylus contract activations across Arbitrum One and Nova on October 2, citing increasingly sophisticated AI-assisted attacks via hand-crafted WebAssembly, while already-active Stylus programs and ordinary Solidity contracts continue to operate.", "detailed_summary_en": "Arbitrum's Security Council paused new Stylus contract activations across Arbitrum One and Nova on October 2, citing increasingly sophisticated AI-assisted attacks via hand-crafted WebAssembly, while already-active Stylus programs and ordinary Solidity contracts continue to operate.", "background_zh": "", "background_en": "", "community_discussion_zh": "", "community_discussion_en": "", "market_impact_zh": "", "market_impact_en": "", "importance_score": 7.5, "references": [], "confidence": 0.95, "story_ids": [ "rss:cryptoslate.com_feed_:a1fa2fcc9ab6ee0e", "telegram:foresightnews:119685" ], "sources": [ { "url": "https://cryptoslate.com/arbitrum-pauses-new-stylus-activations-over-ai-assisted-attack-risks/", "label": "CryptoSlate", "source_type": "rss", "official": false }, { "url": "https://foresightnews.pro/news/h5Detail/114514", "label": "foresightnews", "source_type": "telegram", "official": false } ] } ] }