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🏦 ISO 8583 Enterprise Financial Audit Suite

The ISO 8583 Enterprise Financial Audit Suite is a comprehensive, modular platform for building, testing, and auditing financial transaction systems with a focus on transparency, security, and regulatory compliance.

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Overview

This project provides a complete, open infrastructure for institutions, payment processors, and fintech engineers requiring robust, standards-compliant transaction handling and auditability. Every component is designed for modularity, observability, and ease of integration within modern enterprise environments.

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Core Components

• Card Switch Engine Java/Spring Boot–based ISO 8583 processor for secure, high-throughput message switching over both TCP and HTTP.

• PCI-Grade HSM Tokenization Hardware Security Module simulation with deterministic or production-ready tokenization of all sensitive fields (PAN, CVV) on entry. Built-in audit logging for all tokenization actions.

• Fraud Detection Engine Python-powered, rule-based or ML-augmented transaction scoring and risk flagging. Real-time scoring with auditable outcomes.

• POS/ATM Simulator (PyQt) Modern GUI to build, randomize, and transmit ISO 8583 messages for manual, regression, and integration testing. Supports both TCP and HTTP, live previews, and audit-grade logs.

• Admin Dashboard & Tracing (Planned) Real-time message visualization, audit trails, and operational dashboards for system monitoring and compliance reporting.

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Key Features

• End-to-end Auditability Structured, immutable event logs for every transaction and field mutation.

• Compliance by Design PCI-DSS, SOX, and other regulatory frameworks supported natively.

• Extensible Architecture Component-based design enables customization and integration into larger payment and audit systems.

• Open Standards & Transparency Source code, message flows, and audit mechanisms are open and reviewable—no vendor lock-in or black boxes.

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Intended Users

• Financial institutions requiring internal or regulatory transaction auditing
• Payment processors seeking transparent, PCI-compliant infrastructure
• Fintech developers and QA engineers building or testing card processing flows
• Security and compliance teams verifying audit readiness

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Getting Started

See the individual component documentation and wiki for setup, configuration, and integration steps. Each module is independent but designed to interoperate for full-stack financial transaction testing and compliance.

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License: MIT Contact: See repository issues/discussionsfor enterprise support, questions, or regulatory partnership.

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This documentation is maintained and updated in line with financial industry best practices. Community and regulatory feedback are welcome.