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Firefox 2.0 incorporates the Google Safe Browsing extension in its own Phishing Protection feature to detect and warn users of phishy web sites.

When Safe Browsing is set to compare visited URLs against a remote blacklist, the URLs are encrypted with a key before they are transmitted. The key is requested from the URL in this preference each time the browser starts if this Safe Browsing service is selected in browser.safebrowsing.dataProvider.

This is an enumerated preference: all preferences whose names start with browser.safebrowsing.provider. are read to generate the list of Safe Browsing providers. The * in the preference name is a non-negative integer, and matches the number in the other preferences needed to describe a provider. It also determines the order in which the providers appear in the options dialog.

Possible values and their effects

The URL from which the key for encrypting URLs is retrieved.

By default, the following preference and value exists:


Trunk builds:


(The string {moz:client} is replaced by 'navclient-auto-ffox' plus the version number for official builds.)


First checked in

2006-05-12 by Brett Wilson

Has an effect in

  • Mozilla Firefox (nightly builds since 2006-05-12; 2.0a3 and above)

Related bugs

Related preferences

External links