Wu said that he learned that Metamask developer @tayvano_ said that a large number of wallets had been stolen with more than 5,000 ETH in the past 48 hours; the only known common point is that the keys were created between 2014 and 2022; they were mainly senior people rather than ordinary novices; it is recommended that everyone do not keep all assets in one key for many years, split assets and use hard wallets.