Flowsurf is a search hijacker that adds sponsored results to Google searches. Malwarebytes can detect and remove this potentially unwanted program. The full version of Malwarebyte would have protected you against the hijacker. It would have blocked their website, giving you a chance to stop it before it became too late. It was downloaded from the webstore, downloaded from a redirect from their website:. It was removed completely from the program:. We hope our application and this guide have helped you eradicate this hijacker.”]
Source: https://forums.malwarebytes.com/topic/254633-removal-instructions-for-flowsurf/