Private equity firms Bain Capital and Crosspoint Capital will acquire cybersecurity startup ExtraHop for $900 million. It’s one of the largest acquisitions of a Seattle-area tech startup to date, and comes amid heightened cybersecurity concerns across industries. ExtraHop uses machine learning to help companies prevent, detect, and eliminate threats on their networks, operating in a fast-growing sector of cybersecurity called “network detection and response.” It has around 1,000 customers including The Home Depot, Concur, Seattle Children’s, Ulta Beauty, and others.