Think this is more of a anti-virus issue than a browser issue. That being said I suggest you delete the other persons profile if still there and clean the FF cache, use MS Disk Cleanup then make sure your AV program is up to date and do a complete scan. I would also advocate using Malwarebytes, SuperAntispyware, AWDcleaner,and get some help running RogueKiller. You may also want to use a online anti-virus scanner such as housecall.trend or Bitdefender, eset, Kaspersky to make sure your AV program is finding all that it should. I would also suggest that you find help to go through your firewall program to make sure it is setup properly and that no ports are left open for the person to enter as well as your router setup. This is significant work and some of it should only be done by a knowledgeable person. Good luck with this.

Suggestion that after running some of the programs I listed if anything found to use the forums of the program that found it to help you out.

If something is found that is a key logger or something spyware I would keep a documentation of this to include in your court issue.

Did you change the password of the Sync account?

Changing the Sync password will wipe all data stored on the Sync server.

First off, change your Sync Password! That will delete your existing data on the Sync server and keep that person from re-connecting to your Sync account.

But, I doubt if that is purely a "Sync" or "web browser" issue. You may have a "key-logger" on that device, which could be sending every keystroke you make to the "stalker". https://en.wikipedia.org/wiki/Keystroke_logging

If you are pursuing legal action, get that computer to security professional for examination (will provide evidence for prosecution) and repair; or get another computer that isn't 'infected' if you want to handle 'this' on-the-cheap. Ask your lawyer for a recommendation for computer security specialists who are licensed in your state for computer forensics, and who would be recognized by "the court" to provide expert testimony in such cases.

You might want to contemplate taking your 8.1 windows up to 8.2 where you should be as that is major security issues fixing 8.1 and/or take it up to Win10 and that will get rid of a bad OS and then you can follow some tutorials at howtogeek. to configure WIn10 the best for you. Taking it to Win10 may wipe out some stuff that he left lingering in your system. Just a thought here.....

Yeah, I know the person. Its not Virus or Malware. I have Trend Micro Maximum security on here. I also use Hitman Pro.

Thanks

Regarding Sync. I never used it. She did. What I really need is to get ride of it altogether.

Since my thought is that it is a browser issue I will need to look at chrome.

I suggest you also look at all the programs that are installed in your system to see if you need them for one and google stuff do not know.

You have more than just a browser problem I would think. And should run the programs I suggested at the top of this. I have all installed on my system or run manually weekly.

If the person is using a key logger changing browsers is not going to help.

Give Seamonkey a try instead of chrome as is a Mozilla browser

Also if going to go your own way should pick a solution and close this thread off... G' Luck

Create a new profile to test if your current profile is causing the problem.

See "Creating a profile":

• https://support.mozilla.org/kb/profile-manager-create-and-remove-firefox-profiles
• http://kb.mozillazine.org/Standard_diagnostic_-_Firefox#Profile_issues

If the new profile works then you can transfer files from a previously used profile to the new profile, but be cautious not to copy corrupted files to avoid carrying over problems.

• http://kb.mozillazine.org/Transferring_data_to_a_new_profile_-_Firefox

Pkshadow said

You might want to contemplate taking your 8.1 windows up to 8.2 where you should be as that is major security issues fixing 8.1

There is no Windows 8.2 as that is what people thought the next Windows version was going to be and ended up being Windows 10.

Pkshadow said

Give Seamonkey a try instead of chrome as is a Mozilla browser

SeaMonkey is not a Mozilla product as it is made by a SeaMonkey Community as a continuation of the old Mozilla suite that Mozilla discontinued with the Mozilla 1.7.13 Release being the last back in April 2006.