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Google revealed plans to test the company's implementation of DNS over HTTPS (DoH) in Chrome 78. DNS over HTTPS aims to improve security and privacy of DNS requests by utilizing HTTPS. The current stable version of Chrome is 77 released on September 10, 2019.

Google notes that DoH prevents other WiFi users from seeing visited websites; common attacks such as spoofing or pharming could potentially be prevented by using DoH.

Google decided to test the DoH implementation in a different way than Mozilla. Mozilla selected Cloudflare as its partner in the testing phase and will use Cloudflare as the default provider when it rolls out the feature to US users in late September 2019.

Firefox users have options to change the DNS over HTTPS provider or turn off the feature entirely in the browser.

Google's DNS over HTTPS plan

Google picked a different route for the test. The company decided to test the implementation using multiple DoH providers. The company could have used its own DoH service for the tests but decided to select multiple providers instead.

Tests will upgrade Chrome installations to use DoH if the DNS service that is used on the system supports DoH. Google circumnavigates any criticism in regards to privacy that Mozilla faced when it announced the partnership with Cloudflare.

Google selected the cooperating providers for "their strong stance on security and privacy" and "readiness of their DoH services" and agreement to participate in the test.
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