What is is a search engine which you may come across via freeware or shareware. It can be set as your default search provider, which means that you will have to use it instead of Google or any other safe search engine.   Among the results provided by you may find some irrelevant hits, which are likely to be presented in order for the owners of various websites to earn money by employing the pay-per-click model. It is advisable to take immediate action to remove from the browser, be it Google Chrome, Internet Explorer, or Mozilla Firefox, in order to regain access to the formed search provider.

It is also known that Contenko is the producer of Yontoo Layers, which is flagged as a potentially unwanted program by some antivirus program. If in addition to you find that the computer contains Yontoo Layers Runtime, do not hesitate to install a reputable PC scanner or spyware removal tool.test

How does access the operating system? can be set as the default search engine by mistake when installing some free applications, which is why it is important that you read the terms of use, which you are provided with. If you come across the terms Contenko or Yontoo while reading the information you find in the installation wizard, decline the installation in order to avoid adverse consequences.

The next time you launch an installer do not install the program blindly. Find out what additional application are installed alongside the selected program, and if you are not satisfied with the terms, cancel the installation. It may occur that when you close the setup during the program is still installed. In such a case, a powerful anti-spyware program would block the unwanted program. If you do not have one, it is time to install it.

How to remove

Our experts recommend that you use SpyHunter. The application will remove the so-called browser hijacker and secure the computer against all types of computer infections. Use this tool if you want to save time and browse the Internet as you did before.

Below you will find a manual removal guide, which may help you restore the former search provider.

How to change the search provider

Internet Explorer

  1. Press Alt+T and click Internet Options.
  2. On the General tab, find the Search section and click Settings.
  3. Select a new search engine and disable/remove the unwanted one.

Mozilla Firefox

  1. Click the search engine icon next to the search box.
  2. Select Manage Search Engines.
  3. Remove and select a new one.

Google Chrome

  1. Press Alt+F.
  2. Click Settings.
  3. Under Search, click the Manage Search Engines button and change the search provider.
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  1. Contenko is very aggressive and intrusive. It produces pop-out and banner ads every time you load a page, and it is very tenacious. It apparently downloaded itself when I went to an infected website, and it went right through Windows Firewall and MSSE. It set my home page to Google and disabled my ability to change to another home page. The only tool I found that would even detect it was Spy Hunter, and it cleaned Contenko out completely.

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