Short stopping + Call Stretching
A call is interrupted before reaching the desired country and is transferred to another country. Or the duration of a billed call is manipulated by fraudulent signalling messages & voice messages
Phone calls that use a computerized autodialer to deliver a pre-recorded message
Fraudsters exploit the differences in long-distance rates between countries at the expense of customers.
Grey-route providers bypass tolls via internet VOIP to a GSM SIM-box located in the destination network
Fraudsters access an operator's network to direct traffic to phone numbers obtained from an International Premium Rate Number provider
Interconnect Bypass Fraud
Malicious software that exploits handsets to make & accept unauthorized calls
A fraudster uses their own, a stolen, or a synthetic identity to obtain mobile devices and services with no intention to paying
Fraudster accesses a PBX to make unauthorized calls, often to expensive international destinations
One-ring and drop calls leaving a "missed call" mark to an expensive destination