Shopping online at 2 a.m.? That's a red flag for buy now, pay later lender Affirm

Americans shopping online after midnight often make riskier transactions and are more likely to default on their loans, according to Affirm CFO Michael Linford.The fintech firm uses the hour a consumer attempts a transaction as a key data point to help determine whether to approve loans, Linford told CNBC in a recent interview. Other factors include a user's repayment history with Affirm and transaction data from credit bureau Experian."Local time of day is a signal that we use in underwriting, and most tim ...