Path of Exile gained a small amount of currency von vkmoons Blog

Its either one of those, 1 has only currency about the account, merely has currency + uniques.

Keeps all stash tabs stuffed with head unsorted and cleans it every day with a certain time, as well as having currency trapped in normal stash tabs, since i dont think any botter will expend real money to POE Goods acquire premium tabs.)

The issue with bots if it comes to your currency, i bet it can be an even better idea to suspend their accounts whenever Buy POE Orbs they gain an X level of currency, doing this you dont need to deal with them like all single day, plus suspending.