3rd party applications can append a url to the desktop shortcut to make Firefox open to that url, skipping the home page and session restore. http://www.ghacks.net/2014/10/07/new-adware-method-manipulating-browser-shortcuts-to-change-the-home-page/
I also wonder if Windows' registry settings can be tweaked in a similar way (for file type associations or default browser choice)?
(In reply to Justin Dolske [:Dolske] from comment #1) > I also wonder if Windows' registry settings can be tweaked in a similar way > (for file type associations or default browser choice)? Generally yes it can though this isn't specific to the registry or Windows. Just as Firefox running as the user can set Firefox as the user's default browser so can another process running as the user. I had Jim and Brian investigate the same functionality on Windows 8 and I have been told we had to use the native API's that displays the native UI to set as default browser but I wouldn't be surprised if there is a way around it. I just haven't had time to investigate if there was.
FYI, we have an article now for affected users searching for answers: https://support.mozilla.org/kb/stop-firefox-opening-bitablecom-my-home-page. I've also linked to the new article from https://support.mozilla.org/en-US/kb/how-to-set-the-home-page and https://support.mozilla.org/en-US/kb/remove-toolbar-has-taken-over-your-firefox-search.
This might be a good candidate for FHR Self Support
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