Cyberdudebivash

          CRITICAL PRIVACY FLAW: LLM Fingerprinting Exposes Your Model's Training Data and IP     By CyberDudeBivash • September 27, 2025 • AI Security Masterclass   You've spent a fortune fine-tuning a proprietary Large Language Model on your company's unique, confidential data. This model is your intellectual property. But what if a competitor could prove, with near-certainty, that you trained your model on their stolen source code? What if a regulator could prove your AI was trained on a dataset containing private user emails? This is the critical threat of **LLM Fingerprinting**, also known as a **Membership Inference Attack**. This is not about stealing the model itself, but about forensically proving what "textbooks" the model studied. It's an attack that can expose your most sensitive data sources, create massive legal liabilities, and destroy your competitive advantage. This masterclass will explain how this attack works, the r...