Opera Help

Trusted websites

Browser security depends on establishing the identity of individuals and organizations who wish to transact business over the internet, and providing them with a secure channel in which to do so. You can manage the security environment provided by Opera through the security preferences.

Like Fraud and Malware Protection, the list of trusted websites is meant to protect you from phishing and malware. But whereas Fraud and Malware Protection depends on an externally-maintained blacklist, the list of trusted websites is a whitelist you maintain yourself. The "Trusted Websites" dialog has two tabs:

You can only install extensions from the sites listed under the "Extensions" tab.
Secure Internal Hosts
External servers can only redirect to computers on your intranet if those computers are listed under the "Secure Internal Hosts" tab.

Adding to the list of trusted websites

To add a source to the list of "Trusted Websites", take the following steps:

  1. From the menu, go to Opera > Preferences > Advanced > Security.
  2. Click the "Trusted Websites" button.
  3. Choose the relevant tab: Extensions or Secure Internal Hosts
  4. Click "Add" and enter the web address of the site. You can also edit or delete sites in the list.


If you attempt to install an extension from a site that is not listed in the "Trusted Websites" dialog under the "Extensions" tab, the installation will be blocked with a warning: "For your safety, you can only install extensions from addons.opera.com or other trusted websites. Trusted websites are defined in the security preferences." If you nevertheless want to install the extension, you have two choices:

By default, extensions and extension updates can be installed only from the following websites:

Secure Internal Hosts

By default, no secure internal hosts are defined.

Related topics

See also: Guide to security and privacy in Opera