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153 stolen addresses contain 132.95 BTC, and researchers are still unable to reproduce the Coldcard attacker's seed

According to monitoring by Bitcoin News, new research published by @PraveenPerera shows that Coldcard attackers seem to first identify addresses with vulnerabilities, then sort them by the amount of Bitcoin held, starting to transfer in batches from the addresses with the highest holdings. The transfer software used was relatively crude.One address had 225 spendable UTXOs, and the attackers extracted exactly the latest 200, leaving the earliest 25, which included a UTXO worth 0.16 BTC. This aligns perfectly with the limitation of a blockchain API investigated by researchers, which defaults to returning 200 records, indicating that the attackers may have failed to load the next page of data. The software even spent a UTXO of 294 satoshis, reportedly increasing the transaction fee by about 2040 satoshis, with the spent amount significantly higher than the value of the UTXO itself.The authors of the study believe that the builders of this tool may have a better understanding of the account balance system than of the Bitcoin UTXO model. Although the attackers seem to have obtained the complete seed of the victims, at least 75 BTC still remain in other addresses derived from the same seed. The biggest suspicion currently is that among the 153 stolen addresses, there are still 132.95 BTC, and researchers have been unable to reproduce the seed behind these addresses, so it cannot be ruled out that the attackers obtained undisclosed private device data or candidate data.

The AI boom has boosted the enthusiasm for "leveraged stock trading" in Japan, with the scale of retail investors' margin trading doubling in six months, reaching the highest level since 2016

According to the Nikkei News, individual investors in the Japanese stock market are accelerating their use of leverage to bet on AI trends. As of July, the amount of credit trading by individual investors in the Japanese stock market reached 123 trillion yen (approximately 1.09 trillion yuan), doubling since the beginning of the year and reaching the highest level since related statistics began in 2016.Data shows that in June, the scale of credit trading by Japanese individual investors hit a historical high, and in July it continued to maintain a high level. At the same time, the proportion of credit trading in the overall trading amount of individual investors rose to 83%, also setting a new record.AI concept stocks have become the main driving force behind the surge in credit trading, among which the credit buy balance of AI storage concept stock Kioxia reached 13.23 million shares as of August 7, making it one of the popular targets.Benefiting from the recent rise in the Japanese stock market, the overall performance of leveraged investors has been decent. The floating yield of credit trading investors briefly turned positive in June, although it fell back to a loss of 8.4% by the end of July, it is still better than the average loss level of the past 10 years (-10.2%).

Macroeconomic policy expectations continue to change, and Gate institutions are continuously upgrading their professional trading infrastructure

In July, the US CPI rose by 0.1% month-on-month and 3.4% year-on-year, while the core CPI increased by 2.5% year-on-year, overall in line with market expectations. As the market continues to assess the Federal Reserve's subsequent policy path, the impact of macro changes on asset allocation and trading strategies is continuously strengthening, further enhancing institutions' focus on liquidity management and trading execution efficiency.Against this backdrop, Gate institutions are continuously improving professional trading infrastructure. According to the transparency report released by the platform in July, Gate CrossEx added one mainstream exchange and 23 trading pairs, launched RPI Orders, reduced the highest fees of multiple exchanges by 50%, and introduced new APIs for market data, funding rates, batch order cancellations, and several WebSocket features; by optimizing concurrent order placement and execution feedback delays, system performance improved by 50%, while the launch of Colo services further reduced trading latency.In addition, SuperLink continues to optimize Fireblocks Gas management and settlement processes, further enhancing institutions' cross-platform asset management and trading collaboration capabilities. In the future, Gate institutions will continue to advance infrastructure upgrades around core capabilities such as trading execution, liquidity, and cross-platform collaboration, providing professional investors with more efficient and stable institutional-level trading services.

A man was sentenced to 7 months in prison for defrauding a friend of $1,757 under the guise of a virtual currency airdrop project

A man in Anshun, Guizhou, used the name of a virtual currency airdrop project as a pretext to lure friends into investing with the bait of guaranteed high returns, ultimately crossing the legal red line. The People's Procuratorate of Pingba District, Anshun City, Guizhou Province, filed a public prosecution, and the court sentenced Zhao to seven months in prison for fraud, along with a fine of 5,000 yuan.Zhao had been paying attention to the field of virtual currency investment for many years and had long been posting investment insights and financial management tips on social media platforms. Zhang was also a virtual currency enthusiast, and the two met on a social platform due to their common interests, gradually becoming friends and frequently discussing investment strategies online. Through long-term communication, Zhao gained Zhang's trust with seemingly professional investment analysis. Subsequently, Zhao proposed a joint investment, to which Zhang agreed. However, after a period of investment, Zhang experienced significant losses and expressed his intention to stop further investments.On August 23, 2025, Zhao claimed that a certain app had launched an airdrop project (to promote a new project, encourage user participation, or reward loyal users, distributing native tokens of the project for free to eligible users), persuading Zhang to invest the remaining funds in his account into this project, promising a return of 100 to 200 U coins (virtual currency) within two days. Zhao also guaranteed that if there were any losses during this period, he would bear the responsibility. To further alleviate Zhang's concerns, Zhao claimed that all investment funds would be transferred to a public chain (the public address of the virtual currency). Believing Zhao, Zhang exchanged 1,757 dollars in his account for Ethereum and completed the transfer according to the wallet link provided by Zhao. In reality, the wallet corresponding to that link was a personal account registered using his girlfriend's identity information, not a public chain. The agreed time for the return of funds had passed, but Zhao had not fulfilled his promise. Zhang urged for repayment multiple times, but Zhao evaded responsibility with excuses such as sending the wrong link and needing time to track it down. On September 7 of the same year, Zhang reported the situation to the police after noticing something was wrong.On April 2 of this year, the Pingba District Procuratorate filed a public prosecution against Zhao for suspected fraud. The procuratorial agency believed that Zhao deceived others out of property by concealing the truth, with a significant amount involved, constituting the crime of fraud. Given that Zhao truthfully confessed to the criminal facts after being apprehended, showed signs of remorse, and had fully compensated the victim for their losses while voluntarily admitting guilt, he could be punished leniently according to the law.
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