is an application that belongs to the software category of browser hijackers. is compatible with most Windows versions and can infect popular web browsers such as Chrome, Firefox, Edge and others.

The Virus will make unwanted changes to your browser.

If has invaded your system, then you have likely noticed certain changes that have been made to the way your browser looks, as well as the way it has started behaving. For instance, some of the most common symptoms accompanying a browser hijacker infection include the change in your homepage and/or the default search engine that you use. These can be replaced by news ones, and if you try to change these settings again yourself, the browser hijacker simply won’t allow it.

This, by the way, is often a reason for people to assume that they may have been infected by some virus or malware. And aiding that confusion is also the fact that programs like tend to generate massive quantities of online ads in the browsers of the infected users. Popups, box messages, in-text links and animated banners can be raining on you from every corner of your screen during browsing sessions, which is something also often associated with virus infections.

The Bestdealfor21 Virus

Bestdealfor21 is not malicious and it will not seek to harm your machine in any way. The most Bestdealfor21 can do is frustrate you with its constant page redirects to various sponsored web locations and it may potentially cause some sluggishness in your system if it’s using too much of its RAM and CPU to generate all the ads.

Nevertheless, browser hijackers like, Auto Refresh Malware and Agafurretor are actually also known for their capacity to potentially expose users to danger. This can happen as a result of being redirected a website that has been compromised by cybercrminals for example, and that way your private information may no longer be safe. Alternatively, you may even encounter malware, even such extremely harmful types like Trojans and ransomware, for instance. Therefore, it’s a good idea to try and stay away from the online ads to the best of your ability.

And in order to avoid being redirected to some site or page that you have no interest in anyway, it’s best to simply see to the removal of altogether. We understand that this is not always as straightforward a task as it may initially sound. And the reason for that is because browser hijacker developers don’t like to give users an easy way out of these infections, so they simply omit including an uninstallation menu that most regular applications have. Therefore, if you try uninstalling on your own, there’s a high chance you will miss some of the scattered components, and the hijacker will simply reinstall itself in your system again.

So to give you a hand with this, we have designed a special removal guide that you can use below. Be sure to follow the steps in it exactly as described and you should have cleaned your system from the infection in no time.


Type Browser Hijacker
Detection Tool

anti-malware offerOFFER *Free Remover allows you, subject to a 48-hour waiting period, one remediation and removal for results found. SpyHunter's EULA,  Privacy Policy, and more details about Free Remover. Virus Removal

You are dealing with a malware infection that can restore itself unless you remove its core files. We are sending you to another page with a removal guide that gets regularly updated. It covers in-depth instructions on how to:
1. Locate and scan malicious processes in your task manager.
2. Identify in your Control panel any programs installed with the malware, and how to remove them. Search Marquis is a high-profile hijacker that gets installed with a lot of malware.
3. How to clean up and reset your browser to its original settings without the malware returning.
You can find the removal guide here.

For mobile devices refer to these guides instead: Android, iPhone


About the author


Violet George

Violet is an active writer with a passion for all things cyber security. She enjoys helping victims of computer virus infections remove them and successfully deal with the aftermath of the attacks. But most importantly, Violet makes it her priority to spend time educating people on privacy issues and maintaining the safety of their computers. It is her firm belief that by spreading this information, she can empower web users to effectively protect their personal data and their devices from hackers and cybercriminals.

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