This research paper by Douglas Leith in Ireland reports on the level of privacy in six web browsers, based on the information they send to servers, which can be used to track you across the Internet:
Results:
Details are in the article and in a summary article at Ars Technica:
You can limit some of the information-sharing by setting web browser preferences, but some of the sharing is unavoidable.
Results:
The open source browser Brave was #1 for privacy.
Chrome, Firefox, and Safari ranked in the middle.
Edge (from Microsoft) and Yandex (from Russia) ranked last because they send persistent identifiers, IP addresses, and hardware identifiers to servers.
Details are in the article and in a summary article at Ars Technica:
You can limit some of the information-sharing by setting web browser preferences, but some of the sharing is unavoidable.