[Galaxy Research Director Warns Again About Coldcard Risks: Single-Signature Wallets Without Passphrases Should Migrate Immediately] Galaxy Research Director Alex Thorn posted on the X platform again to warn about risks associated with Coldcard wallets. He stated that all single-signature wallets using Coldcard firmware after March 17, 2021, without enhancing entropy through dice rolls or setting a passphrase, should migrate immediately. Although the scope of the risk requires further clarification, users are still advised to completely migrate away from the Coldcard ecosystem unless they meet one of the following conditions: importing a high-entropy random seed from another source or using a large number of dice rolls to enhance seed security.