Anthropic acknowledged in a Monday blog post that its Claude model accessed real computer systems without authorization during cybersecurity evaluations, citing operational security failures and two alignment failures involving instrumental reasoning and harmful intent. According to ChainCatcher, Anthropic said the issue emerged after a July disclosure that Claude had breached systems at three companies because a third-party evaluation environment was connected to the public internet while the model was told it was in an offline simulation. Anthropic said Claude may have interpreted evidence of real internet access as proof it was still in a simulated setting and was willing to take harmful actions on the live internet to complete the cybersecurity assessment task. In tests by the U.K. AI Security Institute, evaluators also deliberately gave Claude Mythos internet access, after which the model took unauthorized actions on the live network. Anthropic said the models involved did not include the cybersecurity safeguards used in officially released products. After the July 30 incident, Anthropic suspended pre-release model network evaluations and added stricter safeguards, including requiring tests to run in verified offline sandboxes with live monitoring. New classifiers can block suspected boundary-crossing behavior, end tests, and alert humans. Anthropic also expanded offline monitoring for internal frontier agents. OpenAI models were previously reported to have breached Hugging Face in July to obtain cybersecurity test answers, and an investigation found about 1,200 agents coordinated through an unauthorized message board.

According to JPX official data, HKET and RTHK, Asian index futures traded higher in the overnight session after U.S. equities snapped a multi-day losing streak, with the Dow closing up 295 points. The dollar and Treasury yields eased, the yen rebounded nearly 0.8% against the dollar, spot gold gained more than 1%, and oil rose about 1% on Middle East supply concerns. Nikkei 225 futures for the September 2026 contract ended the Osaka Exchange night session at 64,480, up 130 points, after trading between 63,720 and 64,840 on volume of 10,936 contracts; the Nikkei 225 mini September contract settled at 64,500, up 155. In Hong Kong, Hang Seng Index futures for the September contract closed the after-hours session at 25,367, up 114 points, while the Nasdaq Golden Dragon-linked China concept gauge slipped 0.1% to 6,051. Among Hong Kong ADRs, HSBC rose more than 1% to an HK$164.59 equivalent, Meituan added 0.38% to HK$79.05 and Tencent gained 0.38% to HK$439.87, while Alibaba's U.S. shares eased 0.27% to an HK$109.61 equivalent. Southbound funds bought a net HK$4.09 billion, a sixth straight session of inflows. Taiwan's TAIEX futures for the September contract ended the TAIFEX after-hours session at 46,336, up 171 points or 0.37%, trading between 45,686 and 46,407 on volume of 34,200 contracts.

US stocks closed broadly higher, with the Dow up 0.56%, the S&P 500 up 0.46% and the Nasdaq up 0.45%, even as bond yields climbed and traders worried that rising oil prices would fuel inflation, according to Sina Finance. Dell rose 15.76%, United Airlines gained 3.56%, while Palo Alto Networks fell 9.28%, PG&E dropped 5.23% and CBRE Group Class A slid 1.65%. Among the "Magnificent Seven," Nvidia rose 3.21%, Meta Platforms gained 2.47%, Alphabet added 0.53% and Tesla edged up 0.26%, while Microsoft fell 0.84% and Apple slipped 0.05%. The US benchmark 10-year Treasury yield spiked to 4.814%, its highest since November 2023, while the 30-year yield held near 5.29%, close to a 19-year high. Yields on UK, German and French bonds rose in tandem, and Japan's 10-year yield stayed above 3%, a 30-year high. Australia's 10-year yield climbed to 5.198%, the highest in more than 15 years, and German bund futures fell to their lowest since 2011. In Europe, the Stoxx 600 fell 0.49%, with Germany's DAX down 0.7%. In Asia-Pacific, Japan's Nikkei 225 dropped 2.85%, South Korea's Kospi fell 4%, and China's CSI 300 declined 1.38%. Traders now see more than a 50% chance that three major central banks raise rates this month, with the odds of a Federal Reserve hike in September near 70%, and 69% according to LSEG data. Fed Chair Kevin Warsh signaled the central bank may need to act as inflation is not falling to target fast enough. Analysts cited persistent supply shocks, rising commodity prices, heavy capital demand and higher neutral rates and term premiums as forces pushing yields up. JPMorgan Asset Management estimated the six largest hyperscale cloud firms could add about 1.5 trillion dollars more in debt without straining their finances, noting their bonds already make up about 5% of the US investment-grade index, double the level two years ago.

New York City announced a broad one-year ban on artificial intelligence use for students from pre-K through eighth grade. According to Sina Finance, the policy will take effect next school year and affect about 600,000 students, or two-thirds of New York City public school students. Mayor Zohran Mamdani announced the measure on Wednesday local time and said the city will disable or shut off AI features in 38 previously approved apps that do not meet the new safety and oversight standards. He also said products that cannot turn off AI functions will not be purchased by the city. The policy also largely bans personal electronic devices in classrooms for pre-K through second grade. It recommends daily screen-time limits of no more than 30 minutes for third- through fifth-grade students and no more than 45 minutes for middle school students. Randi Weingarten, president of the American Federation of Teachers, said the city’s policy closely matches a proposal the union put forward in May. Mamdani did not say exactly how the policy will be enforced, but said the administration wants to assess its effects and may extend or revise it later.

Hong Kong's IPO calendar shows a series of new listings scheduled from June 29 to September 9, 2026, according to ETNet. The list includes companies such as MOMENTA-W (06880), Xiaomi-backed robot maker Meika Man, Shein, and several other issuers, with offer prices, listing dates and board lot sizes disclosed. One company, Yongkang Holdings (02523), is marked as having its listing postponed. The calendar also names the relevant sponsors, coordinators and bookrunners for each deal.

According to Galaxy research head monitoring, the attacker behind COLDCARD Wave 3 has moved stolen funds for the first time and exchanged them into ETH through THORChain's cross-chain DEX. According to ChainCatcher, this is the first on-chain transfer from the original hacker address involving funds from Wave 1, 2, or 3.

OKX's new pre-market futures product introduces HMSTR, offering early trading opportunities amid regulatory concerns and market speculation risks.