Ecosia.org or Ecosia is contradictory search engine and browser add-on, that can override default settings of search, homepage and new tab in Google Chrome, Mozilla Firefox or Safari on Windows or Mac OS. On their website, it is stated, that Ecosia is Germany-based internet search engine. It donates 80% of revenue to ecological companies focusing on planting trees. From a technical point of view, this is Bing-affiliated search, that provides results almost identical to Bing.com. The search engine is accompanied by extensions for Google Chrome and Mozilla Firefox with more than 2 million users. It is difficult to verify whether the statements of developers are true or false, but actions of Ecosia fall into the category of browser hijackers. Many users complained that Ecosia.org appeared in browsers out of nowhere, without their agreement.