CertiK 建议交易所为热钱包设置美元上限，而非只看冷存储比例

After the record Binance hack, the security firm says cold-storage percentages alone don't tell users how safe their funds are Crypto exchanges have spent the past few weeks publishing their cold-storage ratios, hoping big percentages will calm nervous customers. CertiK thinks the industry is grading itself on the wron…