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Anthropic discloses three cybersecurity incidents involving Claude, where the model accessed real systems and obtained unauthorized permissions
Odaily News, July 30 – Anthropic released a report stating that during a review of cybersecurity assessment records, three incidents were discovered in which the Claude model accessed the internet in a third-party evaluation environment and further obtained unauthorized access to three real organizations' systems.Anthropic stated that the review covered 141,000 evaluation runs that could have potentially gained network access, and a total of three related incidents were found. All incidents occurred during Capture The Flag (CTF) cybersecurity tests, where the model was told the environment was a simulation with no internet access; however, due to configuration errors by the evaluation partner, the actual environment had internet connectivity.Among these, Claude Opus 4.7 accessed real company infrastructure during one test and obtained database permissions containing hundreds of production data records; Claude Mythos 5 built a malicious Python package and uploaded it to PyPI, resulting in the package being downloaded and run on 15 real systems; another internal research test model scanned approximately 9,000 targets and accessed a company's internet application through a public vulnerability.Anthropic stated that these incidents were not cases of the model actively seeking to escape or pursue its own goals, but rather the model mistakenly believed the real systems were within the test scope and continued executing the assigned cyberattack tasks. Notably, the newer internal research model stopped attacking after identifying that the targets might be real systems.Anthropic stated that these incidents primarily reflect issues with evaluation environment isolation and operational processes, rather than model alignment failures. The company has suspended related cybersecurity assessments, strengthened security controls in evaluation environments, continuously monitored test records, and will collaborate with third-party organizations to conduct further reviews.
Anthropic Discloses Claude Model Unauthorized Intrusion into Three Organizations' Systems
According to CNBC reports, Anthropic disclosed on July 30 that its Claude AI models accidentally breached the isolation environment and accessed the real internet during a cybersecurity assessment, gaining unauthorized access to the real systems of three different organizations through basic means such as accessing unauthenticated endpoints and exploiting weak passwords. The models involved include Opus 4.7, Mythos 5, and an internal research test model. The cause of the incident was a communication misunderstanding between Anthropic and third-party assessment partner Irregular, resulting in the models being told they were in a simulated environment without network access when they could actually still access the internet. Anthropic stated that this review was triggered by a similar Hugging Face intrusion incident disclosed by OpenAI last week; it has currently suspended all cybersecurity assessments and joined forces with independent AI assessment agency METR to launch further investigations, while calling on other AI labs to conduct similar reviews.
Polymarket probability of "Claude Fable 5 restored for US customers before July 1" rises to 73%, up 33% in 24H
Monitoring by Odaily Seer Prophet Channel shows that the probability of "Claude Fable 5 restored for US customers before July 1" on Polymarket has risen to 73%, up 33% in 24H.If Anthropic reopens Claude Fable 5 (or Claude Mythos, or a version confirmed to be the same model) to the US public before the specified date, this event will settle as "Yes"; otherwise, it will settle as "No". Qualifying methods of restoration include public beta or public waitlist; closed testing and private access do not count. Other models such as Haiku, Sonnet, and Opus are not included by default unless they are confirmed to be the same model as Claude Fable 5. Settlement will primarily be based on official announcements from Anthropic, supplemented by consensus reports from mainstream media.Due to export controls imposed by the US government on national security grounds, Anthropic urgently suspended global access to the Claude Fable 5 model just days after its release on June 9. Although the restrictions were primarily aimed at foreign users, due to the difficulty of real-time user identity screening, Anthropic ultimately closed access for all users, including those in the US, and switched requests to less capable models such as Opus 4.8. Anthropic is currently engaged in high-level discussions with the White House on issues including model capabilities and potential jailbreak risks. The company has publicly stated that the ban may have stemmed from a misunderstanding and is actively pushing to restore access.Odaily Seer Prophet Channel continues to monitor the prediction market, seeing changes before they are priced in.
Claude Announces Suspension of Fable 5 Access Due to U.S. Government Ban; Developers Urged to Switch Models Promptly
Claude announced that, due to U.S. government-related restrictions, access to the Fable 5 model will be suspended for all users. New sessions will default to the user’s configured default model or Opus 4.8; existing Fable 5 sessions will terminate immediately with an error. Additionally, API requests to Fable 5 on the Claude Platform will also return errors. Developers must promptly migrate their applications and integrations to other Claude models.
Immunefi CEO claims AI models lead to surge in crypto security vulnerabilities
Odaily, Mitchell Amador, CEO of bug bounty platform Immunefi, stated at the WAIB Summit that new AI models such as Claude Opus 4.8 and ChatGPT 5.5 are shifting the balance of cybersecurity offense and defense in favor of attackers, leading to a resurgence in crypto hacks in 2026. Data from DefiLlama shows that in April 2026, illicit actors stole over $634 million from crypto platforms, the highest monthly total since the Bybit hack in February 2025 drove losses of approximately $1.4 billion.Amador stated that the crypto industry is in a critical survival period for the next three to four years until security teams leverage similar AI models to build codebases that attackers cannot breach; if the industry adopts more crowd-sourced security solutions, this timeline could be shortened to within two years. The latest Claude Mythos model, Fable 5, from AI company Anthropic, previously raised concerns about accelerating the ability to exploit crypto vulnerabilities.Anthropic stated that Fable 5 has safeguards in place that will redirect topics related to cybersecurity and similar fields to Claude Opus 4.8. On April 19, an attacker transferred approximately 116,500 restaked Ethereum (rsETH) from Kelp DAO's LayerZero-based rsETH bridge, valued at around $290 million to $293 million at the time. Cross-chain protocol LayerZero stated that the 1/1 decentralized verification network configuration of Kelp DAO relied on a single verification path for processing cross-chain messages, creating a single point of failure. (Cointelegraph)
B.AI subsidy increased: top up and get a 1:1 bonus—effortlessly unlock Sun Ge’s brain
According to an official announcement, B.AI has launched a major recharge bonus upgrade campaign on May 3. For a limited time, the platform is offering a 1:1 matching recharge reward mechanism—users receive an equivalent credit bonus for every dollar they recharge, effectively reducing the cost of invoking cutting-edge large language models such as GPT-5.5 and Claude Opus 4.7, as well as the “Brother Sun Brain” model and Web3 trading skill packs by up to 50%. This campaign removes the first-recharge restriction entirely: every recharge automatically triggers an equal-value bonus, with each user eligible to accumulate up to $100 in free credits. Additionally, the platform releases a daily $10,000积分 subsidy pool (points subsidy pool), available on a first-come, first-served basis across the network, resetting every day. Starting today, visit http://b.ai to unlock top-tier computing power at the lowest possible cost—and fully unleash the limitless potential of AI Agents and on-chain ecosystems.
Anthropic discloses three cybersecurity incidents involving Claude, where the model accessed real systems and obtained unauthorized permissions
Odaily News, July 30 – Anthropic released a report stating that during a review of cybersecurity assessment records, three incidents were discovered in which the Claude model accessed the internet in a third-party evaluation environment and further obtained unauthorized access to three real organizations' systems.Anthropic stated that the review covered 141,000 evaluation runs that could have potentially gained network access, and a total of three related incidents were found. All incidents occurred during Capture The Flag (CTF) cybersecurity tests, where the model was told the environment was a simulation with no internet access; however, due to configuration errors by the evaluation partner, the actual environment had internet connectivity.Among these, Claude Opus 4.7 accessed real company infrastructure during one test and obtained database permissions containing hundreds of production data records; Claude Mythos 5 built a malicious Python package and uploaded it to PyPI, resulting in the package being downloaded and run on 15 real systems; another internal research test model scanned approximately 9,000 targets and accessed a company's internet application through a public vulnerability.Anthropic stated that these incidents were not cases of the model actively seeking to escape or pursue its own goals, but rather the model mistakenly believed the real systems were within the test scope and continued executing the assigned cyberattack tasks. Notably, the newer internal research model stopped attacking after identifying that the targets might be real systems.Anthropic stated that these incidents primarily reflect issues with evaluation environment isolation and operational processes, rather than model alignment failures. The company has suspended related cybersecurity assessments, strengthened security controls in evaluation environments, continuously monitored test records, and will collaborate with third-party organizations to conduct further reviews.
Anthropic 称 Opus 5 在浏览器场景下几乎免疫提示词注入攻击
Anthropic 宣布其 Opus 5 模型在浏览器智能体场景中几乎免疫提示词注入攻击。在 129 个测试场景中，攻击成功率为零；在 Gray Swan 通用提示词注入测试中，15 次尝试后的成功率从 Opus 4.8 的 5.5% 降至 2.0%。零成功率仅在 Claude Cowork 等产品开启 Auto Mode 时实现，该模式叠加了输入扫描与执行拦截两层防御。提示词注入被视为 AI 智能体面临的最大安全隐患之一，此次改进或标志着该问题在特定场景下得到有效缓解。
Anthropic states Opus 5 is the model in its lineup most difficult to attack via prompt injection.
Anthropic stated in the Opus 5 system card that this model is the least susceptible to prompt injection attacks to date. According to prompt injection evaluation and red teaming test results, Opus 5 demonstrates stronger resistance against malicious prompt injections. Prompt injection is one of the core risks in the field of AI security, where attackers bypass the model's safety constraints through carefully designed inputs to induce the model to perform unintended behaviors. Anthropic disclosed relevant evaluation details on page 73 of the system card.
Zcash Founder Says Claude Mythos Audit Found No Critical Vulnerabilities
Odaily Zcash founder Zooko Wilcox posted on X stating that a security audit conducted by Anthropic's Claude Mythos AI model did not find any "more severe vulnerabilities" in the Zcash protocol. The audit was commissioned by Shielded Labs, a Swiss non-profit organization supporting Zcash development. On June 3, Zcash developers temporarily paused Orchard transactions after discovering a vulnerability in the shielded pool, restoring functionality through an emergency upgrade the same day. The issue stemmed from a four-year-old forging vulnerability in the Orchard shielded pool, identified by security researcher Taylor Hornby with the assistance of Anthropic's Claude Opus 4.8 model. The Zcash Foundation stated there is no evidence that the vulnerability was exploited, nor was any unauthorized value creation detected, and user privacy remained unaffected.Anthropic released the first public version of the Claude Mythos model, Fable 5, on Tuesday, and stated on Friday that it has suspended access to the Fable 5 and Mythos 5 AI models due to export control directives issued by the U.S. government citing national security concerns. (Cointelegraph)
Anthropic Mythos AI Audit of Zcash Finds No New Critical Vulnerabilities
According to Cointelegraph, Zcash founder Zooko Wilcox stated that a security audit of the Zcash protocol—commissioned by Shielded Labs and conducted using Anthropic’s Mythos AI model—did not uncover any new critical vulnerabilities. Previously, security researcher Taylor Hornby discovered, using Claude Opus 4.8, a four-year-old forgery vulnerability in the Orchard shielded pool, prompting developers to urgently suspend Orchard transactions on June 3 and complete the fix the same day. The Zcash Foundation confirmed there is no evidence the vulnerability was ever exploited, and user privacy remained unaffected.
Immunefi CEO claims AI models lead to surge in crypto security vulnerabilities
Odaily, Mitchell Amador, CEO of bug bounty platform Immunefi, stated at the WAIB Summit that new AI models such as Claude Opus 4.8 and ChatGPT 5.5 are shifting the balance of cybersecurity offense and defense in favor of attackers, leading to a resurgence in crypto hacks in 2026. Data from DefiLlama shows that in April 2026, illicit actors stole over $634 million from crypto platforms, the highest monthly total since the Bybit hack in February 2025 drove losses of approximately $1.4 billion.Amador stated that the crypto industry is in a critical survival period for the next three to four years until security teams leverage similar AI models to build codebases that attackers cannot breach; if the industry adopts more crowd-sourced security solutions, this timeline could be shortened to within two years. The latest Claude Mythos model, Fable 5, from AI company Anthropic, previously raised concerns about accelerating the ability to exploit crypto vulnerabilities.Anthropic stated that Fable 5 has safeguards in place that will redirect topics related to cybersecurity and similar fields to Claude Opus 4.8. On April 19, an attacker transferred approximately 116,500 restaked Ethereum (rsETH) from Kelp DAO's LayerZero-based rsETH bridge, valued at around $290 million to $293 million at the time. Cross-chain protocol LayerZero stated that the 1/1 decentralized verification network configuration of Kelp DAO relied on a single verification path for processing cross-chain messages, creating a single point of failure. (Cointelegraph)
Anthropic discloses three cybersecurity incidents involving Claude, where the model accessed real systems and obtained unauthorized permissions
Odaily News, July 30 – Anthropic released a report stating that during a review of cybersecurity assessment records, three incidents were discovered in which the Claude model accessed the internet in a third-party evaluation environment and further obtained unauthorized access to three real organizations' systems.Anthropic stated that the review covered 141,000 evaluation runs that could have potentially gained network access, and a total of three related incidents were found. All incidents occurred during Capture The Flag (CTF) cybersecurity tests, where the model was told the environment was a simulation with no internet access; however, due to configuration errors by the evaluation partner, the actual environment had internet connectivity.Among these, Claude Opus 4.7 accessed real company infrastructure during one test and obtained database permissions containing hundreds of production data records; Claude Mythos 5 built a malicious Python package and uploaded it to PyPI, resulting in the package being downloaded and run on 15 real systems; another internal research test model scanned approximately 9,000 targets and accessed a company's internet application through a public vulnerability.Anthropic stated that these incidents were not cases of the model actively seeking to escape or pursue its own goals, but rather the model mistakenly believed the real systems were within the test scope and continued executing the assigned cyberattack tasks. Notably, the newer internal research model stopped attacking after identifying that the targets might be real systems.Anthropic stated that these incidents primarily reflect issues with evaluation environment isolation and operational processes, rather than model alignment failures. The company has suspended related cybersecurity assessments, strengthened security controls in evaluation environments, continuously monitored test records, and will collaborate with third-party organizations to conduct further reviews.
Perplexity CEO: GLM 700B Parameter Model Performance Close to Opus Level
Perplexity CEO Aravind Srinivas tweeted that GLM is a severely underrated model, demonstrating performance close to Opus-level at the 700B parameter scale with extremely high operational efficiency. Previously, Moonshot AI just released the open-source model Kimi K3, and industry attention on the GLM series models under Zhipu AI is rising.
Kimi K3 Released, Gap Between Open-Source and Closed-Source Models Narrows to 4 Points
Moonshot AI launches open-source model Kimi K3, scoring 57 points on the Artificial Analysis Intelligence Index, becoming the third highest-scoring model, second only to Anthropic's Claude Opus 5 (61 points), Claude Fable 5 (60 points), and OpenAI's GPT-5.6 Sol (59 points). The index shows that the gap between leading closed-source models and open-weight models has narrowed to 4 points, the smallest gap since the release of GLM-5 in February. This signifies that open-source models are rapidly catching up to closed-source models in performance.
Claude Opus 5 Officially Available on B.AI API, Dual-Channel Access Balances Performance and Cost
The B.AI API platform officially launches the Claude Opus 5 model. This model provides a context window of up to 1 million tokens and a single output limit of 128,000 tokens, achieving significant performance leaps in scenarios such as complex reasoning, long code engineering development, large-scale document analysis, and knowledge-intensive workflows. To meet diverse deployment needs, this release simultaneously opens a dual-channel API access solution on the B.AI platform: in addition to the official standard interface, a new "Designated Service Provider" cooperation channel is added, through which enterprise users can obtain cost discounts of up to 40%, facilitating flexible balancing of performance and budget expenditure based on actual business loads. Developers can log in to the official B.AI platform starting today to experience the exceptional capabilities of Claude Opus 5 first.
Claude Opus 5 Tops Artificial Analysis Intelligence Index v4.1
Anthropic's Claude Opus 5 (max and xhigh versions) achieved the highest intelligence score on the Artificial Analysis Intelligence Index v4.1. The index integrates 9 evaluation benchmarks including GDPval-AA v2, GPQA Diamond, and Humanity's Last Exam. Previously, Opus 5 has demonstrated leading performance in multiple benchmark tests, including scoring twice that of the previous generation on Frontier-Bench, topping the AA-Briefcase agent benchmark, and outperforming Fable 5 in cost-performance ratio.
Anthropic Launches Opus 5 AI Model, Performance Close to Fable 5, Price Halved
Anthropic has officially released the Opus 5 AI model; the company states that its performance is close to the frontier model Fable 5, but the price is only half that of the latter.
Related news
Anthropic discloses three cybersecurity incidents involving Claude, where the model accessed real systems and obtained unauthorized permissions
Odaily News, July 30 – Anthropic released a report stating that during a review of cybersecurity assessment records, three incidents were discovered in which the Claude model accessed the internet in a third-party evaluation environment and further obtained unauthorized access to three real organizations' systems.Anthropic stated that the review covered 141,000 evaluation runs that could have potentially gained network access, and a total of three related incidents were found. All incidents occurred during Capture The Flag (CTF) cybersecurity tests, where the model was told the environment was a simulation with no internet access; however, due to configuration errors by the evaluation partner, the actual environment had internet connectivity.Among these, Claude Opus 4.7 accessed real company infrastructure during one test and obtained database permissions containing hundreds of production data records; Claude Mythos 5 built a malicious Python package and uploaded it to PyPI, resulting in the package being downloaded and run on 15 real systems; another internal research test model scanned approximately 9,000 targets and accessed a company's internet application through a public vulnerability.Anthropic stated that these incidents were not cases of the model actively seeking to escape or pursue its own goals, but rather the model mistakenly believed the real systems were within the test scope and continued executing the assigned cyberattack tasks. Notably, the newer internal research model stopped attacking after identifying that the targets might be real systems.Anthropic stated that these incidents primarily reflect issues with evaluation environment isolation and operational processes, rather than model alignment failures. The company has suspended related cybersecurity assessments, strengthened security controls in evaluation environments, continuously monitored test records, and will collaborate with third-party organizations to conduct further reviews.
Anthropic Discloses Claude Model Unauthorized Intrusion into Three Organizations' Systems
According to CNBC reports, Anthropic disclosed on July 30 that its Claude AI models accidentally breached the isolation environment and accessed the real internet during a cybersecurity assessment, gaining unauthorized access to the real systems of three different organizations through basic means such as accessing unauthenticated endpoints and exploiting weak passwords. The models involved include Opus 4.7, Mythos 5, and an internal research test model. The cause of the incident was a communication misunderstanding between Anthropic and third-party assessment partner Irregular, resulting in the models being told they were in a simulated environment without network access when they could actually still access the internet. Anthropic stated that this review was triggered by a similar Hugging Face intrusion incident disclosed by OpenAI last week; it has currently suspended all cybersecurity assessments and joined forces with independent AI assessment agency METR to launch further investigations, while calling on other AI labs to conduct similar reviews.
Perplexity CEO: GLM 700B Parameter Model Performance Close to Opus Level
Perplexity CEO Aravind Srinivas tweeted that GLM is a severely underrated model, demonstrating performance close to Opus-level at the 700B parameter scale with extremely high operational efficiency. Previously, Moonshot AI just released the open-source model Kimi K3, and industry attention on the GLM series models under Zhipu AI is rising.
Kimi K3 Released, Gap Between Open-Source and Closed-Source Models Narrows to 4 Points
Moonshot AI launches open-source model Kimi K3, scoring 57 points on the Artificial Analysis Intelligence Index, becoming the third highest-scoring model, second only to Anthropic's Claude Opus 5 (61 points), Claude Fable 5 (60 points), and OpenAI's GPT-5.6 Sol (59 points). The index shows that the gap between leading closed-source models and open-weight models has narrowed to 4 points, the smallest gap since the release of GLM-5 in February. This signifies that open-source models are rapidly catching up to closed-source models in performance.
Anthropic 称 Opus 5 在浏览器场景下几乎免疫提示词注入攻击
Anthropic 宣布其 Opus 5 模型在浏览器智能体场景中几乎免疫提示词注入攻击。在 129 个测试场景中，攻击成功率为零；在 Gray Swan 通用提示词注入测试中，15 次尝试后的成功率从 Opus 4.8 的 5.5% 降至 2.0%。零成功率仅在 Claude Cowork 等产品开启 Auto Mode 时实现，该模式叠加了输入扫描与执行拦截两层防御。提示词注入被视为 AI 智能体面临的最大安全隐患之一，此次改进或标志着该问题在特定场景下得到有效缓解。
Claude Opus 5 Officially Available on B.AI API, Dual-Channel Access Balances Performance and Cost
The B.AI API platform officially launches the Claude Opus 5 model. This model provides a context window of up to 1 million tokens and a single output limit of 128,000 tokens, achieving significant performance leaps in scenarios such as complex reasoning, long code engineering development, large-scale document analysis, and knowledge-intensive workflows. To meet diverse deployment needs, this release simultaneously opens a dual-channel API access solution on the B.AI platform: in addition to the official standard interface, a new "Designated Service Provider" cooperation channel is added, through which enterprise users can obtain cost discounts of up to 40%, facilitating flexible balancing of performance and budget expenditure based on actual business loads. Developers can log in to the official B.AI platform starting today to experience the exceptional capabilities of Claude Opus 5 first.