The Insidious Effect of Number Rotation on Voice Security and KYC
Phone spam and fraud is a pervasive problem threatening the consumer voice experience. In Q1 2023, one quarter of all unknown calls received by consumers around the world were spam and fraud — that’s more than 73.6 million spam and fraud calls per day. As operators and regulators have taken steps to address the spam and fraud problem, the practice of number rotation — where call originators switch phone numbers to avoid flagging — has emerged as a direct response.
Jonathan Nelson explains the practice of number rotation and how it threatens trust in the voice call, including:
What exactly is number rotation?
What trends does Hiya observe in number rotation?
Why is number rotation harmful?
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