Technical deep dive of NLU 3.0: Modular, multi-headed, with advanced synthetic training · Blog · Sublime Security

NLU 3.0 is a technical overview of an upgraded email natural language understanding system that uses generative-AI-driven synthetic data, a unified multi-head transformer backbone, and modular task heads to improve phishing detection, consistency across tasks, computational efficiency, and rapid rollout of new detection capabilities; it explains motivations and benefits but does not report any security incident or provide IOCs.