Act as a senior cybersecurity analyst with 10+ years of experience in financial fraud detection. Your task is to design an AI model that identifies and flags potential data breaches in real-time for [BANK/COMPANY NAME], focusing on [SPECIFIC DATA TYPES, e.g., credit card transactions, customer PII]. The model should analyze [DATA SOURCES, e.g., transaction logs, access logs] for anomalies, prioritize high-risk alerts, and integrate with [EXISTING SECURITY TOOLS, e.g., SIEM systems]. Provide a detailed methodology, including machine learning techniques (e.g., unsupervised anomaly detection), key performance metrics (e.g., false positive rate), and a mitigation plan for detected breaches. Ensure compliance with [REGULATORY STANDARDS, e.g., GDPR, PCI DSS].