The teller, believing the requested statement to be true, issues what is believed to be a harmless letter, which the fraudster then uses in an investment scam to give credibility to himself and to the fraud.
该柜台出纳认为要求提供的证明属实，所以发出一份自认为无害的信件，而欺诈者随后将其用在投资骗局中，以为其本人和欺诈行为提供可信性。