Internet Security: Browser Problems Only Tip of the Iceberg

Just as a floating iceberg only exhibits part of its mass above the waterline, we believe that our measurement of potentially insecure Web browsers based upon major and minor version information is smaller than the global number of users at risk. Insecure Web browsers (i.e., they have built-in vulnerabilities and security weaknesses) are of course a critical security problem, but vulnerable plug-ins that are accessible (and exploitable) through the Web browser extend the insecurity iceberg and form the part hidden below the water surface.