Whither information security? Examining the complementarities and substitutive effects among IT and information security firms

The last few years have seen an increase in the mergers and acquisitions (M&A) activity among information security firms and other information technology (IT) firms offering complementary technologies. Using social network analysis methods, we investigate the characteristics and underlying dynamics of these M&A activities in the United States (US) over the period 1996–2008. Our results reveal a 400% increase from 1996 to 2006 in the cohesiveness of the network linking the information security firms