OptimalUnit

OptimalUnit is a Potentially Unwanted Program (PUP) that malware researchers classify as a browser hijacker. These PUPs are designed to promote fake search engines, redirect users to unknown websites, and generate advertising revenues for their operators. In the particular case of OptimalUnit, the questionable search provider that is supposed to be pushed is found at directsearchapp.com. To fulfill its purpose, this malware threat undertakes specific unsolicited modifications of the infected browser's settings.

OptimalUnit replaces the original homepage, default search engine, and new tab address with the OptimalUnit Search. As a result, each time the users launch their browser, they get redirected to this potentially harmful URL, while the same unreliable search engine conducts all user search queries. OptimalUnit does not have the technology to generate unique search results; therefore, it misuses some legit search engine to deliver a results page.

Another characteristic symptom of OptimalUnit is a new browser extension installed on the user's computer. However, in most cases, these installs do not happen intentionally, and people do not even realize they have them until the issues mentioned above occur. Browser hijackers are often bundled within other software's setup or infiltrate computers through corrupted advertisements. Typically, they also have data-tracking features to collect information about the user's browsing habits, search queries, IP addresses and even login credentials. Thus, OptimalUnit's activities can have severe consequences, and we recommend removing this program as soon as possible.