DETECTCHA

Privacy-Preserving Edge Computing Solution for Financial Fraud Prevention Using On-Device AI

Overview

DETECTCHA is a mobile security solution that protects users from Voice Phishing by leveraging Android’s native Live Caption service and On-device AI model.

The system monitors live call transcriptions in real-time, processes the data through an optimized on-device pipeline, and triggers instant warnings when fraudulent patterns are detected. By performing all analysis locally (Edge Computing), DETECTCHA ensures robust security without compromising user privacy.

Core Logic

1. Live Capture: Intercepts real-time streaming text from Android's Accessibility-based Live Caption service.
2. Lightweight AI: Analyzes conversation context using a resource-efficient AI model tailored for mobile environments.
3. Instant Alert: Evaluates phishing probability and provides immediate visual/auditory warnings to the user.

Getting Started

1. Clone the repository.

   git clone [https://github.com/minu-dev/DETECTCHA.git](https://github.com/minu-dev/DETECTCHA.git)