Some people think that Firefox “private mode” allows them to surf the internet invisibly. But that’s not the case. In fact, the following data is no longer saved in private mode:
- Visited pages (in the browser history and the list of your address bar)
- Form and search field entries for auto-complete
- Download lists – but beware: The downloaded data is still stored on your computer. It is simply not displayed in the “All Downloads” list.
- Permanent cookies – however: For the active session in the private window, the cookies are stored separately from the cookies in normal mode.
- Cached websites – as well as data for offline use
Remember that passwords and bookmarks that you create when using Firefox incognito are saved permanently. What’s more, you will still get URL suggestions when typing into the address bar in private mode. These are based on your search behavior when using normal mode. Your provider can also continue to identify you and your surfing behavior – for instance, by using your IP address and device. If you also wish to remove this trail and surf (more) anonymously, you’ll need to use a VPN client.