FireEye's current CEO is Kevin Mandia, who joined the company after FireEye acquired his company Mandiant in 2014. Mandia is trying to boost FireEye's margins with hundreds of layoffs and widening its moat with Helix, an all-in-one platform that bundles together many of FireEye's services with a single user interface. If it can successfully pivot away from appliances and toward FaaS, Helix, and its other subscription-based services, FireEye's revenue growth might accelerate again.