Test Center: How secure is Firefox?

Mozilla's popular Web browser could do better with the addition of security zones and tighter JavaScript controls

By Roger A. Grimes
January 27, 2009
Mozilla's open source Firefox browser has made a significant dent in Internet Explorer's dominant market share. Much of its popularity is due to the wide availability of third-party add-ons that significantly extend Firefox's functionality -- allowing Firefox to disable Java or JavaScript on the fly, perform JavaScript whitelisting, even host ActiveX controls, for example. Firefox has always pushed the boundary in terms of features and functionality, and it can boast both growing enterprise support and the ability to run on Windows, Mac, and Linux. One claim Firefox can't make is a high granularity of security control.

Firefox does not automatically ask for elevation when installing, so be sure to run as administrator beforehand if you want it to install the browser into the normal Program Files folder in Windows Vista or another user-securable location. If installed on Vista, Firefox runs as a single process (Firefox.exe) with medium integrity, DEP (Data Execution Prevention) and ASLR (Address Space Layout Randomization) enabled, and file system and registry virtualization disabled. The latter is a feature in Vista that allows users to run applications without having administrative privileges.

More here>> http://www.infoworld.com/article/09/01/27/04TC-firefox-security_1.html
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