Calls validated by AB Handshake will be free from
A robocall is a phone call that uses a computerized autodialer to deliver a pre-recorded message, as if from a robot.
The fraudulent carriers or transit providers start to record part of the conversation in a call and after 1-2 minutes the call is dropped on the B-side while kept on hold on the A-side with the recorded audio being played back repeatedly.
Short-duration calls, mainly to mobile devices, leaving a missed call number which is either premium rate or contains advertising messages
Criminal exploits the difference between high international interconnect rates and low retail prices for on-net and off-net calls.
Practice causing the telephone network to indicate to the receiver of a call that the originator of the call is a station other than the true originating station
PBX hacking/fraud happens when someone gains access to a business's PBX phone system and generates a profit from the international calls, at the business's expense.
Short stopping occurs when a “dishonest” operator ends the call on their network before it reaches the destination.
Fraudster using bots or scripts to initiate the fraud via the company’s on-line form which the fraudster fills out to initiate calls from companies to premium numbers