Keep Fast Search

Threat Scorecard

Ranking: 12,327
Threat Level: 50 % (Medium)
Infected Computers: 131
First Seen: January 25, 2019
Last Seen: September 8, 2023
OS(es) Affected: Windows

The Keep Fast Search functions as a browser hijacker. As such, its goal is to hijack a Web browser on the infected device and change some of its crucial settings. As typical for applications like this, its primary goal is to promote a fake search engine, in this particular case - Additionally, the Keep Fast Search can read the user's browsing history, putting thus the victim’s online privacy at risk. Users often download and install browser-hijacking applications inadvertently, which is why they are characterized as Potentially Unwanted Applications (PUAs).

The Keep Fast Search advertises by replacing the hijacked browser’s default search engine, homepage, and new tab page with this particular URL. redirects to, and that is how it shows search results to the user. However, it is worth mentioning that results displayed by fake search engines are inaccurate, can promote shady websites, and may contain links that lead to potentially threatening services on the Internet.

A big part of browser-hijacking applications, as well as the pages they are designed to redirect to, can collect browsing history and personal user information. The collected data is then typically abused for marketing purposes, sold to third parties or otherwise monetized. That is a sufficient reason to delete the Keep Fast Search from your system as soon as possible.

In most cases, Keep Fast Search installs on a computer via downloaders and installers for other programs. That method of stealthy distribution is known as 'bundling.' PUA's victims end up having their browsers hijacked when they ignore the "Advanced," "Custom," or other settings available in installers.


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