Weekly Crypto News Roundup: Japan's ETF Warning, Vietnam's Exchange Licensing, and Shanghai's Underground Banking Crackd

Japan's Financial Services Agency (FSA) has officially warned against the sale of overseas single-stock leveraged ETFs, citing public interest concerns and the potential for market distortion. In Vietnam, five companies have cleared the initial assessment for crypto exchange licenses, though none have been issued yet; firms must now meet strict security and capital requirements, with new market violation penalties starting September 1. Meanwhile, Shanghai police have dismantled a massive underground banking operation that utilized virtual currencies to faci