Around 5,000 customers of Yes Bank’s multi-currency prepaid forex card, issued in partnership with BookMyForex, were hit by a spate of fraudulent transactions in early hours of Monday, and transactions worth $280,000 were approved during the incident, the bank said on Wednesday. The bank’s fraud-monitoring systems triggered transaction rejections between 3:30 a.m. and 8:30 a.m. (IST). According to the bank, the unauthorised attempts were confined to specific bank identification numbers (BINs) and were routed through 15 merchants based in the same Latin American jurisdiction.