26,069 ETH, worth approximately $100 million, was recently transferred from a Coinbase Prime wallet to an anonymous address. The transaction was flagged by Whale Alert, a service that tracks large cryptocurrency transactions. The transfer has raised concerns about the security of Coinbase Prime, a custodial service that holds cryptocurrency for clients. Coinbase has not yet commented on the transfer. This is a developing story, and more information will be provided as it becomes available.