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Flash

The leak of French tax data affects nearly 678,000 people, which may exacerbate the risk of violent attacks against cryptocurrency holders

The French Minister of Finance confirmed that hackers breached the French Public Finance Directorate system at the end of June and stole personal and corporate taxpayer data. According to the platform FrenchBreaches, which tracks cyberattacks in France, this incident affected approximately 678,437 people, equivalent to about 1% of the French population, but the exact number is still under investigation and has not been finally confirmed.The leaked data reportedly includes sensitive information such as names, birth dates, home addresses, phone numbers, email addresses, tax identification information, and income data. Among them, nearly 27,000 individuals had tax incomes of at least 100,000 euros, 386 exceeded 1 million euros, and another 8 exceeded 10 million euros. Reports indicate that the database has been sold on the dark web market for thousands of euros. The attackers, calling themselves ZeroBytes, claimed they extracted the relevant records using an internal search tool, which was only discovered later when access was cut off.This incident has raised concerns in the cryptocurrency industry, as there has been a noticeable increase in "wrench attack" violent robbery incidents targeting cryptocurrency holders in France in recent years. If high-income individuals' addresses and contact information are leaked, it could provide criminals with a more precise target list.

Western Digital CPO: Flash memory handles the present, HDD manages the entire lifecycle

Ahmed Shihab, Chief Product Officer of Western Digital, stated that the key to AI storage competition is not simply pursuing the fastest medium, but whether it can continuously scale capacity at an affordable cost. He believes that many architectures run well in the early stages, but when the data scale grows from several PB to hundreds of PB or even EB levels, issues may arise due to uncontrolled costs.Flash storage is suitable for high-performance, low-latency scenarios such as model weights, GPU overflow, KV caches, and session contexts; HDDs are more suitable for large-scale, long-term storage, and cost-sensitive data such as training corpora, logs, checkpoints, compliance records, synthetic data, and inference outputs. He summarized: "Flash handles the present, HDD handles the entire lifecycle."At the scale of AI, storage costs themselves will become an architectural issue. Long-term storage of large volumes of data on high-performance media will crowd out budgets for computing, networking, power, and personnel. For many bulk storage workloads, the issue is not whether flash can store, but whether customers can afford the total cost of using flash in the long term.In the future, AI storage will not be dominated by a single technology, but should be designed in layers based on performance, cost, power consumption, density, reliability, and data lifecycle. He emphasized that this is not a competition between flash and HDD, but rather a need to match the appropriate medium for different workloads from the very beginning; otherwise, the architecture may impact business sustainability as it scales.

The effect of South Korea raising the margin threshold is becoming apparent: retail investors are reducing their holdings in leveraged ETFs and turning to spot purchases

According to Daum, after South Korea's financial regulatory authorities raised the base margin for domestic and foreign single-stock leveraged products from 10 million won in securities to 30 million won in pure cash starting July 31, South Korean retail investors began to rapidly adjust their portfolios.According to data from the Korea Securities Depository, Tesla's 2x leveraged product TSLL recorded a net purchase of 14.58 million USD on August 3, but the purchase amount on the 4th plummeted from the previous day's 15.6 million USD to 1.56 million USD, while the selling amount rose to 8.68 million USD, resulting in a net sell of 7.11 million USD for the day. During the same period, Tesla's spot net purchases reached 42.3 million USD, more than five times the net purchase amount of TSLL.Micron Technology and SanDisk also showed similar divergence—Micron's 2x leveraged product flipped from a net purchase of 10.81 million USD on the 3rd to a net sell of 15.98 million USD on the 4th, while SanDisk's 2x leveraged product changed from a net purchase of 17.74 million USD to a net sell of 33.74 million USD. Meanwhile, the spot net inflows for the two companies were 148 million USD and 145 million USD, respectively, indicating a significant trend of funds shifting from leveraged tools to the underlying stocks.The tightened regulations require that the base margin must be paid in cash, with alternative securities such as stocks, ETFs, and bonds no longer counted, and existing investors must also meet the new standards when making additional purchases; selling is unrestricted, but the funds from sales must be settled after T+2 days before they can be counted as cash margin.The new rules were originally planned to be implemented in phases in August, but due to concerns that limiting it to Korean products would lead to a capital influx into overseas leveraged products like Tesla and Nvidia, creating a balloon effect, South Korean regulators moved the implementation date up to July 31 and simultaneously covered both domestic and foreign products.South Korean investors have reacted strongly, believing that extending measures aimed at local market volatility to overseas products constitutes excessive intervention, and that only South Korean investors must meet the 30 million won cash threshold, putting them at a disadvantage in global competition.
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