> If you attempt to use them to solve a problem like this, you have to have a mechanism in place to deal with the very real case of a false positive (or decide

> If you attempt to use them to solve a problem like this, you have to have a mechanism in place to deal with the very real case of a false positive (or decide which group to build the filter with - which one is less damaging to have show up as a false positive). Hmm, so it is possible to have two bloom filters? One for the black list and one for the white list. If black list filter says no, then the element is definitely in white list. And vice-versa.