CertiK has recommended that crypto exchanges implement hard dollar limits on their hot-wallet holdings, emphasizing that relying solely on cold-storage ratios is insufficient for security. This advice follows the recent Binance hack, which targeted hot wallets. Gate reported that 88.26% of its total assets are in cold storage, while Coinbase claims over 99% of customer assets are offline. CertiK noted that while higher cold-storage levels reduce online exposure, the benefits diminish at very high levels. They suggest setting hot-wallet caps based on customer liabilities, estimated withdrawal needs, and absolute loss ceilings.