I want to do inter process communication between Firefox (via extension) and my application. Both reside in "Program files" (of windows 7 OS). I also assume that malware is running in the system and have user level privilege (and not admin level).
Can I rely on windows security to make sure that Firefox or my application is not modified by malware or new files are not added in program files?
OR; in other word is it safe to assume that operating system makes sure that one cannot add or modify files under "program files" with out admin privilege?