A method for sending a notification indicating fraud using a transaction authorization channel is described. Upon performing a fraud analysis on a first transaction previously authorized by an issuer of an account via the transaction authorization channel, a determination that the first transaction has indications of fraud is performed. In response to determining that the first transaction has indications of fraud, a transaction authorization request message for a second transaction is generated to include a billing descriptor field with data representing a notification of fraud on the account. The transaction authorization request message for the second transaction is sent, via the transaction authorization channel, to an electronic device associated with the issuer of the account so that it will modify the account to include a transaction entry for the second transaction that will be recognized as a fraud notification when an account holder of the account views pending transactions.