Darktrace Enterprise Immune System

Artificial intelligence is gaining steam in security as a way for companies to better detect threats. Darktrace has been riding a wave of growth on that trend, with an offering that uses machine learning to detect and stop attacks. It's Enterprise Immune System appliance passively monitors raw network data, building profiles of users and devices across the network, then using machine-learning algorithms to spot anomalous behavior. The company raised $75 million in Series D funding in July at a valuation of $825 million.