You receive a text from your crypto wallet custodian, such as Coinbase or Gemini, claiming a fraudulent transaction has occurred on your account. Some detail related to the transaction is provided. You do not recognize the transaction and respond indicating fraud and that you would like to speak to a representative, who promptly calls you. The representative has your personal information, asks you to confirm certain details, then instructs you to report the code just sent to your phone to confirm your identity. You do itand you've been hacked.