In the course of regular use, Opera initiates some network traffic on its own without a user request. The reasons for this traffic are described below. Much of the traffic is related to the security and well-functioning of Opera.
See also Opera Software's privacy statement.
By default, Opera checks for newer versions of Opera. Approximately once every three days, the browser sends an XML document to autoupdate.opera.com, with the following information:
In reply, autoupdate.opera.com sends an XML document to the browser, with information and links to new versions of the following items:
Read more in Auto-update help.
By default, Fraud and Malware Protection is enabled. It contacts sitecheck2.opera.com to protect you against phishing and malware sites.
Read more in Fraud and Malware Protection help.
The search field includes numerous search engines. The first time Opera is run, it contacts Google to determine which top level domain (TLD) should be used for your Google search.
Each of the search engines has its own favicon, and this favicon is kept up-to-date by downloading a new one, if and when necessary.
To use Opera Link, you need an Opera account. By default, Opera Link is disabled. If you enable it, Opera will periodically synchronize your bookmarks and other browser data to a server.
Read more:
By default Opera Turbo in disabled. When it is enabled, Opera loads all webpages via a proxy server, which compresses them to make browsing faster.
Read more in Opera Turbo help.
To use Opera Unite, you need an Opera account. By default Opera Unite is disabled. The network connections initiated by Opera Unite, when enabled, are described in the System administrator's handbook.
Read more in Opera Unite help.
Need help? Hit F1 anytime while using Opera to access our online help files, or go here.