Wu said that blogger @maik2hello said that his entire chain assets were stolen from more than 30 wallets and more than 30,000 U; SlowMist and Chain Security have both participated in the assistance; the mnemonics of hundreds of addresses are managed in an encrypted Excel spreadsheet and placed in a separate dedicated U disk; the U disk has been to a printing shop once, and the comments suspected that it was caused by a Trojan horse on the printing shop's computer.