You have a couple of choices.

You can delete your Firefox Account and register for a new one, which will remove all of your sync data. You can also simply change your Firefox Account password and this will wipe all of your sync data.

Either way, this will erase all of the data that was stored on the Firefox servers and when you sign in for the first time, whatever is on that computer will be the transferred to the Firefox sync servers.

Hope this helps.

Separate Security Issue: Update your Flash Player or remove it using these links; http://helpx.adobe.com/flash-player/kb/uninstall-flash-player-windows.html Uninstall Flash Player | Windows http://helpx.adobe.com/flash-player/kb/uninstall-flash-player-mac-os.html Uninstall Flash Player | Mac

Note: Windows users should download the ActiveX for Internet Explorer. and the plugin for Plugin-based browsers (like Firefox).

Note: Windows 8 and Windows 10 have built-in flash players and Adobe will cause a conflict. Install the plugin only. Not the ActiveX.

Flash Player Version: Version 30.0.0.113

https://get.adobe.com/flashplayer/ Direct link scans current system and browser Note: Other software is offered in the download. <Windows Only>

https://get.adobe.com/flashplayer/otherversions/ Step 1: Select Operating System Step 2: Select A Version (Firefox, Win IE . . . .) Note: Other software is offered in the download. <Windows Only> +++++++++++++++++++ See if there are updates for your graphics drivers https://support.mozilla.org/en-US/kb/upgrade-graphics-drivers-use-hardware-acceleration

I would be more concerned about your friend having your Passwords on his PC, as a result of synchronizing his data on your PC and vice versa. IOW, if he got your data, he got it all not just bookmarks.

the-edmeister said

I would be more concerned about your friend having your Passwords on his PC, as a result of synchronizing his data on your PC and vice versa. IOW, if he got your data, he got it all not just bookmarks.

So thanks for the scary part. Any solution to this? Or does changing his password delete everything that came over as the 1st responder says?

bobffmac said

I'm at work and my friend emailed me after he created his own firefox account on my PC at my house. He went home and logged into his firefox account and said, by email, that both our bookmarks are now in the bookmark list. Since he is a novice PC user, I told him to delete the ones that are not his. I figured I could go home and NOT log into my firefox acccount to avoid sync happening. I would then make sure my bookmarks are good under the bookmarks menu drop-down (from the previous time I used firefox). If so, I could then do a sync to hopefully remove his bookmarks if they were present.

How do you delete w/o logging in though? Same with a password change, how do you do that w/o logging in? Sounds like a circular conundrum.

bobffmac said

the-edmeister said

I would be more concerned about your friend having your Passwords on his PC, as a result of synchronizing his data on your PC and vice versa. IOW, if he got your data, he got it all not just bookmarks.

So thanks for the scary part. Any solution to this? Or does changing his password delete everything that came over as the 1st responder says?

1. The solution is to change all your passwords.
2. No, your friend changing his Sync password doesn't do anything with the data that has already been synchronized to his computer from your computer. Data other than account passwords are no big deal, but passwords especially for banking and credit card accounts absolutely need to be changed.

Do you use a master password?

If you use a master password then Sync can't auto-connect on start and if the Password Manager isn't enabled (you haven't entered the MP during a session) then others won't be able to Sync passwords.

• https://support.mozilla.org/en-US/kb/use-master-password-protect-stored-logins

For the bookmarks to recover you can restore an older JSON backup just before the Sync occurred.

• Bookmarks -> Show All Bookmarks -> Import & Backup -> Restore

The name of an automatically created JSON bookmarks backup in the bookmarkbackups folder includes a total item count (folders and separators included) and an hash value to prevent saving the same backup more than once. You also see this count in the Restore menu drop-down list.

• bookmarks-YYYY-MM-DD_<item count>_<hash>.jsonlz4.

bobffmac said

bobffmac said

I'm at work and my friend emailed me after he created his own firefox account on my PC at my house. He went home and logged into his firefox account and said, by email, that both our bookmarks are now in the bookmark list. Since he is a novice PC user, I told him to delete the ones that are not his. I figured I could go home and NOT log into my firefox acccount to avoid sync happening. I would then make sure my bookmarks are good under the bookmarks menu drop-down (from the previous time I used firefox). If so, I could then do a sync to hopefully remove his bookmarks if they were present.

How do you delete w/o logging in though? Same with a password change, how do you do that w/o logging in? Sounds like a circular conundrum.

As soon as you open Firefox on that device it will try to connect to the Sync server within the first minute or two after Firefox is opened. So if you want to inspect your Firefox bookmarks, disconnect that computer from the internet! When you do it that way make sure that your friend didn't leave your PC connected to his Sync account.

Same thing for the other devices that you have connected to your Firefox Account; as soon as those Firefox installations are opened they will connect to your Firefox Account.

Some advice: Password protect your Windows Logon User Account (LUA) and Log-off your LUA when you aren't using your PC yourself.

Then have a "guest" LUA for other people to use; that will stop them from being able to access any of your personal data for every program that you have installed in Windows, including all your saved files for everything.