Revenue shared fraud is one of the most common fraud schemes threatening the
telecom industry today.
It involves using fraudulent or stolen numbers (A-numbers) to repeatedly call
a premium rate number (B-number), which shares the cash generated with the
fraudster.
Say that you’d like to detect national and international revenue share fraud
using Amazon QuickSight ML.
Consider the typical traits of a revenue share fraud phone call.
The pattern for revenue share fraud is multiple A-numbers calling the same
B-number or a range of B-numbers with the same prefix.
The call duration is usually higher than average and could be up to two hours,
which is the maximum length of time international switches allow.
Generally, the calls originate from one cell or a group of cells.
One SIM may make short test calls to a variety of B-numbers as a precursor to
the fraud itself, which most often happens when the risk of detection is lowest,
for example, Friday night, weekends, or holidays.
Conference calling may be used to make several concurrent calls from one
A-number.
Often, SIMs used for this type of fraud are sold or activated in bulk from the
same distributor or group of distributors.
SIMs could be topped up using fraudulent online or IVR payments,
such as using stolen credit card numbers.
Both PAYG credit and bundles may be used.