Search.manualsdirectory-api.org will alter your browser's settings which is why it is categorized as a hijacker. Hijackers may usually be seen attached to freeware, and if they go undetected, they would install without the user actually seeing. If you don't want these kinds of infections to inhabit your OS, be cautious about what you install. This is not a severe infection but because of its unwanted activity, you'll want it gone as soon as possible. You will notice that instead of the website that is set as your home web page and new tabs, your browser will now load the hijacker's promoted page. Your search engine will also be modified, and it could insert advertisement links among the real results. Browser hijackers will reroute you to sponsored web pages so as to boost traffic for them, which permits their owners to make income from advertisements. Some of those reroutes might lead to insecure pages, so be careful of malware. If you contaminated your device with malware, the situation would be much more dire. Browser redirects tend to pretend they have useful features but you could easily replace them with proper extensions, which won't cause weird redirects. You'll see more customized content appearing, and if you're wondering why, the hijacker is following your browsing and gathering information about you. That information can also end up in suspicious third-party hands. All of this is why you ought to uninstall Search.manualsdirectory-api.org.
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