Blockchain CDR Registry for IRSF Mitigation
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Solution Overview
Problem
International Revenue Share Fraud (IRSF) in the telecommunication industry results in significant revenue losses due to fraudulent international phone calls, where fraudsters inflate traffic or short-stop calls to premium rate numbers, making it costly and difficult to identify and track fraudulent carriers across a decentralized network without a trusted central entity.
Innovation Solution
A system utilizing a blockchain-based registry to record and encrypt Call Data Records (CDRs) with double encryption, using a call encryption key and a committee encryption key, to create a tamper-proof decentralized log of handoffs, allowing for the identification of fraudulent carriers while maintaining business confidentiality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a decentralized network without a trusted central entity is used to store CDRs, then business confidentiality is maintained, but the ability to identify fraudulent carriers is compromised
Solution Approach 1:
The patent introduces a trusted central entity (TCE) as an intermediary that mediates between the need for confidentiality and the need for fraud detection. The TCE stores CDRs from multiple carriers in a centralized database, enabling it to track calls across carrier boundaries and identify fraudulent patterns that individual carriers cannot detect alone, while still protecting business-sensitive information through controlled access.
Solution Approach 2:
The patent combines CDR data from multiple independent carriers into a single centralized database managed by the TCE. This merging allows for end-to-end tracking of international calls across different carriers, enabling the detection of fraud patterns such as traffic pumping and short stopping that require cross-carrier visibility.
2Loss of energy
If manual processes are used to identify fraudulent calls, then resource consumption is low, but the cost and time required to detect fraud increase
Solution Approach 1:
The patent implements automated fraud detection systems that continuously monitor CDR data in the centralized database, providing real-time feedback on suspicious call patterns. The system automatically identifies fraudulent activities such as traffic pumping to premium rate numbers and short stopping, eliminating the need for manual analysis and significantly reducing both time and resource consumption.
Solution Approach 2:
The system enables self-service fraud detection by automatically analyzing CDR data without requiring human intervention. The automated detection algorithms continuously process call records, identify fraudulent patterns, and generate reports, allowing the network to self-monitor and self-protect against revenue share fraud.
3Reliability
If carriers store CDRs in proprietary databases, then data security is maintained, but the ability to track calls end-to-end is lost
Solution Approach 1:
The TCE acts as an intermediary that receives CDR data from multiple carriers and stores it in a centralized database. This allows call routing information to be preserved and made accessible for end-to-end tracking while maintaining data security through the TCE's controlled access policies and security measures.
Solution Approach 2:
The centralized database at the TCE serves multiple functions: it stores CDRs from various carriers, enables end-to-end call tracking, supports fraud detection, and provides a unified view of international call routing. This universal database replaces the need for multiple proprietary databases while enhancing their capabilities.
Data Source
AI summary
Aspects of the subject disclosure may include, for example, a non-transitory, machine-readable medium, comprising executable instructions that, when executed by a processing system including a processor, facilitate performance of operations including receiving a call; selecting a next carrier to handoff the call; generating a call data record (CDR) for the handoff to the next carrier; encrypting the CDR using a call encryption key, thereby creating an encrypted CDR; encrypting the encrypted CDR using a committee encryption key, thereby creating a double encrypted CDR; recording the double encrypted CDR to a blockchain; and sending the call encryption key to the next carrier. Other embodiments are disclosed.