DuckDuckGo is an internet search engine that focuses on protecting its users' privacy. One of the features of DuckDuckGo is the ability to display WOT, or Web of Trust ratings next to search results. This helps users to avoid connecting to dubious websites. Go to https://duckduckgo.com/ and click on the menu button located at the top-right corner of your screen. (The menu is represented by 3 horizontal bars.)
Click on Advanced Settings:
Click on Save and Exit for your changes to take effect.