LeakScan scans your AP export (CSV/Excel) for suspected duplicate payments: same invoice paid twice, invoice number variants, duplicate payment references, unapplied credits. Everything runs in your browser CSP blocks all outbound requests, so your file never leaves the tab (verify in DevTools). CFO ready HTML report + Excel export. In a blind test it found $38,125 of planted duplicates across an unseen file, 5/5 to the cent, with zero false alarms on rent and batch runs.
