Online or offline call wholesalers hack into PBXs in order to sell calls to their customers without incurring any of the charges themselves; the more expensive the destination the better; the more calls the wholesaler can route out of a Call Center simultaneously the better.
Destinations may be satellite
phones that cost $8/minute to call, or countries that cost upwards of $2/minute
to call. Obviously, the more lines the fraudster uses to perpetrate the attack,
the more profound the financial loss.