Normally when clicking on a link from Google and Bing, even in incognito mode, the terms of the search are sent to the site you’re visiting within the HTTP referrer header. When you visit that site, the computer you’re using shares information, such as the IP address. This information can ultimately be used to identify you.
An additional method to help avoid search leakage is to use a proxy. DuckDuckGo has a Tor exit control, which essentially creates an end-to-end anonymous/encrypted search. Simply typing !proxy domain into DuckDuckGo will automatically route you through a proxy, be mindful though that proxies can be slow, especially the free ones, the DuckDuckGo proxies are funded through advertising.
Will DuckDuckGo share my information with the authorities?. DuckDuckGo disclosed it doesn’t receive law enforcement requests because there is no data to request.
Weinberg commented saying:
“I think that law enforcement has essentially understood we don’t have anything to give them; they don’t really come knocking for things. Most of these laws are about turning over existing business records and we don’t have any records to turn over. There’s really nothing to take from us.”
If you are one of those people who doesn’t want to be part of the surveillance culture that is so prevalent these days then “Duck it” instead of “Google it”.