1. Open Ubuntu Software Center

step1

2. Search for unity tweak tool, and click Install

step1

3. Type your password to install

Step 3

4. When installation is finished, open Unity Tweak Tool

Step 4

5. Click Search

Step 5

6. Uncheck Search online sources and Show "More Suggestions"

Step 6

That's it! Now when you type search terms into Dash, they won't get sent to Ubuntu or any third party companies.

What's this about?

If you're an Ubuntu user and you're using the default settings, each time you start typing in Dash (to open an application or search for a file on your computer), your search terms get sent to a variety of third parties, some of which advertise to you.

Ubuntu should protect user privacy by default. Since it doesn't, you can follow these steps to disable the parts of Ubuntu which are invasive to your privacy.

Note: This privacy problem only affects Unity. If you use GNOME (sudo apt-get install gnome-shell) or any other desktop environment, or if you run an Ubuntu derivative like Linux Mint, Xubuntu, Kubuntu, etc., you won't have this problem.

Read more.

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