Mircea Vasilescu maintains an online brokerage account. In early March, Mircea received an e-mail from the firm that explained that there had been a computer error and asked Mircea to call a phone number to verify his customer information. When Mircea called the number, a recording asked that he enter the code from the e-mail, his account number, and his social security number. After he did so, he was told that he would be connected with a customer service representative, but the connection was terminated. He contacted the brokerage company and was informed that they had not sent the e-mail. Mircea was a victim of: