Check Out This Year's 10 Coolest Security Startups

Illumio

CEO: Andrew Rubin

Illumio is another cloud security vendor that closed a massive funding round in recent months, announcing it had raised $125 million in Series D funding in June. Illumio has an offering that adapts to both data center and cloud environments, securing them by providing visibility and control over enterprise applications. The company, which has already seen 400 percent year-over-year growth in annualized bookings, said it plans to put the new funding toward global expansion, including a big investment in its channel organization and R&D.