17. Sword & Shield Enterprise Security
CEO: John McNeely
Ranked at #301, Sword & Shield has leapfrogged 122 places on our 2010 list, due to its revenue growth of 66 percent. Its 2009 revenue was $74 million, which it earned by focusing on network security services. Sword & Shield has extensive experience in network security and regulatory compliance for large-scale corporate IT environments and mission-critical federal systems.