Fraud Detection System Analyzing User Action Series

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Solution Overview

Problem

Existing fraud detection systems are inadequate in comprehensively evaluating a series of actions performed by a user from login to changing or registering user information, leading to insufficient accuracy in fraud detection.

Innovation Solution

A fraud detection system that includes login detection, display control, action information acquisition, and fraud detection means to analyze user actions from login to user information screen display, utilizing a learning model to detect fraudulent behavior.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If fraud determination score is calculated for each operation separately, then the calculation process is simple, but the fraud detection accuracy is insufficient

Engineering Contradiction:
Improvefraud detection accuracyVSAvoiddetection system complexity
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The patent merges multiple separate operation assessments into a unified fraud detection framework. The fraud determination score is calculated by integrating information from a series of operations (login, screen transitions, user information access) rather than evaluating each operation in isolation. This combining approach allows the system to capture the contextual relationships between operations, thereby improving fraud detection accuracy while maintaining manageable system complexity through structured integration.

Inventive Principle:
Principle #5Merging (Combining)

2Loss of information

If only individual operations are analyzed, then the analysis process is fast, but the comprehensive understanding of user behavior is insufficient

Engineering Contradiction:
Improvebehavioral context informationVSAvoiddetection processing time
Core Design Contradiction:
Loss of informationVSLoss of time

Solution Approach 1:

The patent implements preliminary action by pre-defining the detection framework and score calculation methodology before actual fraud detection occurs. The system establishes the relationship between operations and fraud indicators in advance, allowing it to efficiently process user behavior sequences without requiring complex real-time analysis. This preparation enables the system to maintain fast processing speeds while comprehensively analyzing behavioral context.

Inventive Principle:
Principle #10Preliminary action

3Reliability

If the detection focuses on single operations, then the detection scope is narrow but the detection depth is sufficient, but the overall fraud detection capability is limited

Engineering Contradiction:
Improvefraud detection reliabilityVSAvoiddetection framework complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent applies segmentation by dividing the fraud detection process into distinct operational stages (login detection, screen transition monitoring, user information access tracking) while integrating them through a unified scoring mechanism. Each operation type is analyzed with appropriate depth, and the segmented results are combined to form an overall fraud assessment. This segmentation approach maintains detection reliability for individual operations while enabling comprehensive fraud detection across the entire user journey.

Inventive Principle:
Principle #1Segmentation

Data Source

PatentUS12248543B2Fraud detection system, fraud detection method, and program
Publication Date: 2025.03.11 RAKUTEN GROUP INC
  • US12248543B2 patent drawing
  • US12248543B2 patent drawing
  • US12248543B2 patent drawing

AI summary

At least one processor of a fraud detection system detects a login of a user in a predetermined service. The least one processor displays a user information screen for changing or registering user information on a display for the user who has logged in to the service. The least one processor acquires action information relating to an action of the user in at least a part of a period from detection of the login to display of the user information screen. The least one processor detects fraud by the user based on the action information.