The new Vivaldi browser released by 2016 by co-founder Jon Jon Tetzchner was released yesterday with a very interesting change.
Like most programs tours, Vivaldi offers a private browsing mode που προσφέρει ένα επιπλέον επίπεδο ιδιωτικότητας, καθώς δεν καταγράφει τους ιστότοπους που επισκέπτεστε και δεν αποθηκεύει cookies ή προσωρινά αρχεία. 
However, Vivaldi with the new version also changed the default engine searchand uses DuckDuckGo in private browsing windows, regardless of what your default browser is in normal browsing mode.
DuckDuckGo was founded by 2008 and is a counterbalance to Google's search engine, which does not track its users on the web, serving the same results to all users.
Apple has added DuckDuckGo as a Safari search option from 2014, while Tor browser uses it by default from 2016.
In most of the major browsers, such as Firefox and Chrome, the default search engine in incognito mode is the same as you use in normal browsing.
So the initiative of Vivaldi to bring her DuckDuckGo as the default search engine in private mode can be considered pioneering.
"We believe that privacy is a fundamental right and that users should not be tracked online," said von Tetzchner, who in addition to founder he is also the CEO of Vivaldi.
