Finally we get to the Location Bar settings. The Location Bar is just Mozilla’s special name for the browser’s address bar.
If you don’t want Mozilla to suggest sites based on your history, bookmarks, or open tabs, un-check the corresponding boxes.
Those are the main settings you’ll want to take care of, but there are a few more options you should tweak before we’re done. Click Search in the left-hand navigation panel of the Preferences tab.
At the top of the search section is a drop-down menu for your default search engine. Choose whatever you'd like, but the most privacy-conscious search provider is DuckDuckGo. It's worth trying for a few days—you can always switch back later.
Back at the main Settings menu, go to Advanced > Data Choices. This option shares information with Mozilla about your browser’s performance and any crash reports. It’s up to you whether to share this data with Mozilla.
Finally, open a new tab and click the settings cog in the upper right corner. By default, you're using the New Tab page, which has a small amount of advertising on it. The easiest option is to choose to show a blank page. For something a little more personal, install the New Tab Override add-on.
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