Steven Maresca is lead engineer and security researcher at Zentific LLC. In this role, he builds flexible tools to manage virtual machines and reduce complexity in systems security.  He possesses deep knowledge of hypervisor internals, systems design, and information security. Most recently, Steven has led a research effort to secure virtual machines, sponsored by the DARPA Cyber Fast Track.  A long-time Xen community member, he is always eager to share his experiences and foster collaboration with peers.