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compromised account?

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I believe my account was used and synched. I haven't synched anything on this site. How can I tell if another person was here and what was synched,where? Ty

I believe my account was used and synched. I haven't synched anything on this site. How can I tell if another person was here and what was synched,where? Ty

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Sync is not related to this support site. Let's continue in your other thread here:

https://support.mozilla.org/questions/1252737