Chromium is an open source browser developed by Google; however, there are reports that some people have re-coded it to do malicious activity on the computer and track keystrokes. If you believe that this is happening on your computer, we recommend that you remove it immediately. This can be done through the add/remove feature on Windows.
We recommend that you scan your computer with a free high quality program like Malwarebytes Anti-Malware. Whereas most antivirus and antimalware programs advertised are paid, Malwarebytes Anti-Malware has a free version will identify and remove viruses. We have a full guide on how to download and use Malwarebytes Anti-Malware, including a download link on the page.
Good luck, and let us know of any questions you have below.