Cyberhaven, an AI-powered data security startup established by three Romanians – Radu Banabic, Cristian Zamfir and George Candrea and two Ukrainians – Volodymyr Kuznetsov and Vitaly Chipounov, has announced it got $100 million in a Series D round of funding led by StepStone Group, together with new investors Schroders and Industry Ventures.