Session Watermark Verification for Vishing Detection in Calls
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Solution Overview
Problem
Vishing attacks, which involve fraudulent voice/video calls or messages purporting to be from legitimate sources, pose a significant threat by inducing individuals to reveal critical information or make improper transactions, often resulting in financial loss or compromise of infrastructure.
Innovation Solution
Implementing a system that uses session watermarks to uniquely identify and verify communication streams, such as voicemails, videomails, and conference calls, by embedding unique watermarks in each communication session to detect and prevent splicing or manipulation of these streams.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If session watermarks are embedded in communication streams to verify authenticity, then the ability to detect and prevent vishing attacks is improved, but the complexity of the communication system increases
Solution Approach 1:
Session watermarks are generated and embedded in communication streams before transmission occurs. This preliminary authentication mechanism allows receiving systems to verify the legitimacy of incoming calls without adding complex real-time analysis during communication, thus improving reliability while managing system complexity.
Solution Approach 2:
The session watermark acts as an intermediary authentication element that carries verification information through the communication channel. Instead of complex direct verification between parties, the watermark serves as a mediator that proves the legitimacy of the communication stream, simplifying the authentication process while enhancing security.
2Object-affected harmful factors
If deep fake voice/video technology is used to create realistic fake communication streams, then the sophistication of attack methods is improved, but the difficulty of detecting fraudulent streams increases
Solution Approach 1:
The session watermark introduces a unique identifying characteristic (analogous to a color signature) into legitimate communication streams. Even though deep fake technology can replicate voice and video content, it cannot replicate the embedded watermark signature, making fraudulent streams detectable through watermark verification despite their sophistication.
Solution Approach 2:
By embedding the session watermark before transmission, the system establishes an authentication baseline that deep fake attacks cannot replicate. This preliminary marking allows receiving systems to easily distinguish between legitimate and fraudulent streams, countering the sophistication of modern deep fake technology.
Data Source
AI summary
A communication stream is received. For example, the communication stream may be a part of a communication session, such as, a voicemail, a videomail, a voice conference call, a video conference call, and/or the like. A determination is made if the communication stream is completely generated using a session watermark. The session watermark is associated with the communication session. In response to determining that the communication stream is completely generated using the session watermark, the communication stream is identified as a legitimate communication stream. In response to determining that the communication stream has not been completely generated using the session watermark, the communication stream is identified as potentially a vishing communication steam.