Protect AI, a cybersecurity company focused on the security of artificial intelligence and machine learning systems, emerged from stealth today with $13.5 million seed funding and its first product, NB Defense. The free product is the industry’s first security solution to address vulnerabilities in a core component used at the beginning of the machine learning supply chain – Jupyter Notebooks. This is a rapidly growing security issue which is increasing significantly annually as more organizations move machine learning into production environments. Today, there are over 10M publicly accessible notebooks, growing by 2M+ annually, with many more in private repositories.