Some web browsers are sending users' browsing history and identifying information to external servers in a "worrisome" trend revealed in a report.

Some of these features can be turned off, according to the recent study, but most browsers silently transmit data as their default setting.

Chrome, Firefox, and Safari were each ranked in the second-lowest privacy tier, while Microsoft Edge and Yandex were ranked as "least private."

"For users of Edge and Yandex ... my advice would be to change browser," the study's author told Business Insider.

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Your internet history may not stay between you and your browser.

According to a February privacy study, many major browsers allow the companies that own them to track users' location and identity while leaking details of users' browsing history to those companies.

The study, authored by Douglas Leith of Trinity College Dublin, tracked the information-sharing practices of commonly-used browsers Google Chrome, Mozilla Firefox, Apple Safari, and Microsoft Edge. It also examined the open-sourced Brave Browser and Yandex, a browser popular in Russia.

Every browser except Brave, it found, shares details of users' browsing history with the companies that own them, along with identifiers that indicate the location or identity of the user.

While it may not come as a shock that browsers track users' history, the fact that this data is being stored on companies' servers means it's also subject to be shared with government agencies or third-party commercial partners — and could be disclosed in a data breach.

The data being sent to companies' servers is anonymized, tied to unique identifiers specific to users' devices. But extensive research has shown that such data can usually be easily "de-anonymized" by connecting a few known data points about a person.

Here's how each of the browsers stacks up in terms of privacy, according to the study.