Download Checker

Threat Scorecard

Ranking: 7,482
Threat Level: 20 % (Normal)
Infected Computers: 40
First Seen: January 4, 2023
Last Seen: September 28, 2023
OS(es) Affected: Windows

The Download Checker browser add-on is described as a way to evaluate Internet speed. Yet, research conducted on Download Checker indicates that it works as an advertising-supported application (adware).

Download Checker's Overview

Adware is designed for intrusive advertisement campaigns, implementing third-party graphical content (e.g., pop-ups, banners, coupons, surveys, etc.) on visited websites or interfaces. Such advertisements may be fraudulent or even threatening in nature, leading to the possibility of stealthy downloads and installations if clicked. Furthermore, any genuine content found in these advertisements is unlikely to come from its original developers but instead from con artists who manipulate affiliate programs for illegitimate income. To operate intrusive ad campaigns efficiently, adware may require conditions such as compatible browser/system specs and user geolocation, as well as visits to certain websites. Even if Download Checker does not serve advertisements itself, its presence can still be unsafe; it may spy on users' browsing activity and track URLs visited, accounts used and websites viewed. The gathered details can then very likely be shared with or sold to third parties - potentially cyber criminals - while bringing up various issues, such as system infection, privacy breaches and identity theft. All in all, adware like Download Checker poses a great risk to device/user safety.

How to Prevent Adware from Being Installed?

Always research any software before downloading, installing and buying it. For utmost safety, go over the terms carefully, analyze available options, utilize the 'Custom/Advanced' settings, and decline all extra programs, plugins, extensions, etc. When browsing online, please take caution - intrusive advertisements, which may be seemingly harmless, can guide you to questionable websites (pornography, adult/dating sites, gambling games, etc.). If you repeatedly notice redirects or advertisements of this type, then investigate your system urgently and delete any suspicious applications or browser add-ons/plugins.


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