A cashbox is provided with a movable latch that is driven by a banknote to a blocking position if an attempt to ‘phish’ a stacked banknote from the cashbox occurs. The latch arrangement is easily pivoted in one direction from a neutral position to a clear position during stacking of a banknote. If an attempt is made to ‘phish’ a stacked banknote, the banknote being “phished” causes rotation of the latch arrangement from the neutral position to a banknote inlet blocking position retaining the banknote in the cashbox.