US 2026/0214162 A1Published application

Voice phishing detection and mitigation

OwnerGaviphat Lekutaiinventor

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Abstract

Voice vishing (vishing) is a type of scam where fraudsters use phone calls to steal sensitive information or money, often by spoofing phone numbers to appear legitimate. Some implementations described herein utilize source identification signals to help disrupt vishing. These signals can verify the legitimacy of a call, making it harder for scammers to succeed. Source identification signals can be signals embedded in a call and can be verified by wireless telecommunicates providers, user devices, or other entities. In some implementations, dynamically generated signals are based on factors such as the recipient's phone number and time, making it significantly more difficult for scammers to replicate source identification signals. In some implementations, transmission properties such as band, channel, or time slot are used in verification processes.

Claims20

Dependent claims

A method for caller verification comprising:

receiving, by a user equipment (UE) associated with a recipient, a phone call from a caller,
wherein the phone call is received via a wireless telecommunications network;
determining a phone number of a caller associated with the phone call;
querying a caller verification database to determine when the phone number of the caller is associated with a verified caller;
and
when the phone number is associated with a verified caller:
analyzing data of the call to determine whether the data of the call comprises a source identification signal, wherein the data of the call comprises audio data or another type of data;
when the source identification signal is present in the data of the call:
determining whether the source identification signal matches an expected signal;
when the source identification signal matches the expected signal, generating instructions to cause the UE to provide a first notification to the recipient indicating that the phone call is verified;
and
when the source identification signal does not match the expected signal, generating instructions to cause the UE to provide a second notification to the recipient indicating that the phone call is not verified;
and
when the source identification signal is not present in the data, generating instructions to cause the UE to provide a third notification to the recipient indicated that the phone call is not verified.

11 more elements

Dependencies are inferred from the claim text.

Facts

Application: 19/031,124Filed 17 Jan 2025
Published: 23 Jul 2026
Term ends: Not estimatedThe source records don’t support an estimate.

Classification8 codes

H04M 3/2281
Arrangements for supervision, monitoring or testing: call monitoring, e.g. for law enforcement purposes; Call tracing; Detection or prevention of…
H04M 1/72484
User interfaces specially adapted for cordless or mobile telephones: wherein functions are triggered by incoming communication events
H04M 3/42042
Calling party identification service: notifying the called party of information on the calling party
H04M 3/436
Systems providing special services or facilities to subscribers: arrangements for screening incoming calls , i.e. evaluating the characteristics…