Mozilla Firefox Web Browser security
Mozilla Firefox is set up like Internet Explorer but does not support ActiveX and security Zones. Firefox does support configurable security policies but with out the graphical user interface.
You should take the following step to disable certain features in Firefox. To edit your settings, select tools, then options:
select main or general category, you can set browser as your default or select option always ask me where to save files. This allow you control what files are saved on your system. This will help protect your system from web sites storing and saving unwanted files on your system.