Tech companies like Facebook and Google are relying on FireEye and other vendors in part because they grew so quickly over the past decade that they did not anticipate how people might misuse their services – or they did not act on warnings. Siva Vaidhyanathan, a UVA professor of media studies, said that companies like FireEye have an advantage because they focus on hiring people with language and cultural expertise in contrast to Silicon Valley’s approach of trying to solve problems with large-scale software.