Family: Wife, Anna, and four children
Hobbies: Astronomy and sailing
Fun fact: Started Sourcefire in his living room (then in Carroll County)
How Sourcefire and Cisco compare
Headquarters:ColumbiaSan Jose, Calif.
2012 revenue:$223 million$46 billion
2012 profit:$5 million$8 billion
Employees: About 650About 74,000
Source: Company filings. Cisco's 2012 fiscal year ended July 28, 2012.