Internet ExplorerはFirefoxよりも安全なのか？

• Is Internet Explorer Safer Than Firefox, Opera and Safari? - Just because it has less security vulnerabilities? - Softpedia

Cenzic revealed that only 10% of all browser security flaws in 2007 impacted Internet Explorer. The next in line is Safari with 15% and then Firefox with no less than 32% of vulnerabilities. Judging strictly by the number of vulnerabilities, Opera is the most insecure browser, having been impacted by no less than 38% of vulnerabilities.

Operaが最もセキュアでない、という。