Payroll hacks are common and they are difficult for banks to detect and prevent. From Business Email Compromise (BEC) to Payee Edit Fraud, fraudsters do not create new batch or transaction but rather modify the recipient number of an existing ACH batch. According to ACFE survey it takes almost 2 years to detect a payroll fraud. With Guardian Analytics machine learning and behavioral analytics fraud detection you can detect ACH fraud on payroll systems as they come and trigger real-time intervention to hold or reject suspicious ACH payroll transactions.