Security in Computing 5th Edition by Shari Lawrence Pfleeger, Charles P Pfleeger, Jonathan Margulies

Exercise 18

One argument in the security community is that lack of diversity is itself a vulnerability. For example, the two dominant browsers, Mozilla Firefox and Microsoft Internet Explorer, are used by approximately 95 percent of Internet users. What security risk does this control of the market introduce? Suppose there were three (each with a significant share of the market). Would three negate that security risk? If not, would four? Five? Explain your answers.