South Korea's Financial Services Commission is considering raising the minimum share of customer crypto assets that domestic exchanges must hold in cold wallets from 80% to approximately 99% after Binance suffered an approximately $6.3 billion security breach. The proposal remains under discussion, with no official decision. Under the Virtual Asset User Protection Act, exchanges currently must store at least 80% of customer digital assets offline. Financial Supervisory Service data showed that Upbit held approximately 99.17% of customer assets in cold wallets at the end of September, compared with 94.76% at Bithumb and 85% at Coinone. The FSC also reviewed withdrawal approval systems, administrator access, transaction monitoring and incident response with major exchanges, and urged stronger financial reserves without specifying additional amounts. Higher cold-storage ratios could affect smaller exchanges and withdrawal speeds by limiting assets immediately available in hot wallets. Binance said it had replenished about 95% of the stolen assets by November 1, verified reserves for 10 major cryptocurrencies on November 2 and restored withdrawals for 51 additional tokens on November 3.