Post 200 The 2011 guide to the region's top businesses

Martin Roesch, founder and chief technology officer of Sourcefire. (Courtesy of Sourcefire)

Public companies and financial services

Sourcefire

Cybersecurity has become a priority for government and commercial entities alike as attacks on Web sites and computer networks grab headlines. Sourcefire offers a mix of software and services designed to find where a system is vulnerable and defend it accordingly. But computing habits and threats are always evolving. Sourcefire announced its $21 million acquisition of Immunet just five days into 2011, adding a cloud platform to its portfolio as more organizations shift to Web-based computing.

Trivia

The founder of this company developed an open-source cybersecurity program called Snort that has nearly four million downloads to date.