Parallel Path Caller Verification Controller for Spoof Detection
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Solution Overview
Problem
Mobile devices are susceptible to nuisance communications from unspecified individuals who spoof legitimate phone numbers, leading to fraudulent or unwanted communications, which existing technologies have not adequately addressed.
Innovation Solution
The Parallel Path Caller Verification (PPCV) controller intercepts communication requests, generates a proof-of-identity (PoI) message to verify the legitimacy of the communication, using challenge-response tests or code requests, and analyzes historical communication metadata to determine if a communication is legitimate or spoofed, thereby redirecting or rejecting the communication request accordingly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If communication requests are intercepted and verified using proof-of-identity messages, then the reliability of communication legitimacy is improved, but the device complexity and processing time increase
Solution Approach 1:
The system performs preliminary verification by intercepting communication requests before they are fully processed and generating proof-of-identity messages in advance. The PPCV controller intercepts requests at the I/S-CSCF level and conducts verification before allowing communications to proceed, preventing spoofed communications from entering the network.
Solution Approach 2:
The PPCV controller acts as an intermediary component between the I/S-CSCF and the communication network. It introduces a verification layer that generates and processes PoI messages without requiring fundamental changes to the existing telecommunication infrastructure, thereby managing complexity through a dedicated intermediate component.
2Reliability
If proof-of-identity messages are generated for all communication requests, then the reliability against spoofing is improved, but the productivity of communication establishment deteriorates
Solution Approach 1:
The system applies verification selectively rather than universally. The PPCV controller generates PoI messages for communication requests that require verification while allowing trusted or low-risk communications to proceed without additional verification steps, balancing security with communication efficiency.
Solution Approach 2:
The verification process can be adjusted by changing parameters such as the strictness of verification, the types of communications subject to verification, and the response time requirements. This allows the system to adapt verification intensity based on communication priorities and risk levels.
3Measurement precision
If historical communication metadata is analyzed to determine legitimacy, then the measurement precision of spoof detection is improved, but the loss of time for processing increases
Solution Approach 1:
The system performs preliminary analysis of historical communication metadata before the verification decision is made. By pre-processing and storing communication patterns, the system can quickly compare incoming requests against established baselines without performing complex real-time analysis, reducing verification time while maintaining detection accuracy.
Solution Approach 2:
The system uses historical communication metadata as feedback to improve verification decisions. By analyzing patterns from previous communications, the system learns to identify spoofed requests more accurately over time, improving detection precision while the cached historical data reduces real-time processing requirements.
Data Source
AI summary
The present disclosure describes techniques for determining whether a communication request is associated with a legitimate communication or spoof communication, prior to establishing the connection. A Parallel Path Caller Verification (PPCV) controller is described that is configured to intercept a communication request from an originating device and generate a proof-of-identity (PoI) message for delivery to the originating device. Upon receipt of a reply message that is responsive to the PoI message, the PPCV controller may determine whether the communication is a legitimate communication. If the communication is determined as legitimate, the PPCV controller may establish a communication based on the communication request.