Mac Virus

MatchKnowledge Virus

Parasite may reinstall itself multiple times if you don't delete its core files. We recommend downloading ComboCleaner to scan for malicious programs installed with it. This may save you hours and cut down your time to about 15 minutes. 

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MatchKnowledge belongs to a category of software better known as adware and all the applications from this category show some specific symptoms which can easily give them away. They are usually linked to the unexpected and overwhelming generation of hundreds of sponsored ads, pop-up messages, colorful banners, page-redirect prompts and promotional click prompts that get displayed on the screen of your browser the moment you open it.

Instructions to remove MatchKnowledge "Virus" from your computer

The application knows as MatchKnowledge will spam you with pop-up ads and push notifications

If you came to “How to remove guide” because you found an application called MatchKnowledge on your system, then know that here we will tell you everything you need to know about this piece of software and the methods that you can use to uninstall it.  It doesn’t matter what browser you typically use as pretty much all of them, including Firefox, Chrome and Safari, could become “hosts” for such an app. The adware applications can be integrated with any of them. And if you have already tried to remove the ads or to restore the settings of your browser to their previous configuration, then you have probably already realized that this does not work in any way. And indeed, as long as MatchKnowledge “Virus” is in your system, you will be powerless against its constant ads generation activity. That’s why the best way to get rid of the intrusive pop-up messages of this unwanted application is to completely uninstall it from the system. For this, we have prepared a very detailed set of removal instructions on this webpage, which you can use if you don’t know where to begin.

How dangerous MatchKnowledge can be?

The adware applications, in general, serve the online marketing industry in a rather aggressive way. However, they are normally not linked to criminal or malicious activities and, therefore, calling them viruses and comparing them to threats like Ransomware or Trojans is not the right way to refer to these pieces of software. Still, they can be extremely annoying and may have undesirable effects on the productivity of your system as a whole as they may use large amounts of system resources for generating and displaying third-party ads on your screen.

Most applications like MatchKnowledge are tools used to promote a variety of different products, services, websites, etc. The manufacturers and the distributors directly related to these products and services typically enter into an agreement with the developers of adware applications in order to promote their advertising messages directly on the screen of the users. They usually pay for the advertising service on a pay-per-click basis. Within this pay-per-click system, the developers of the adware earn money depending on how many times the users have seen and clicked on certain banners, pop-ups, hyperlinks or other advertising materials. However, in order to extract the maximum benefit from this method, they may oftentimes employ some rather aggressive promotional methods such as automatic page-redirects and unstoppable flow of ads which would increase the number of clicks. Understandably, no user would be willing to put up with this both because such activity can be extremely obstructive and also because there is the possibility of getting exposed to random web content and unfamiliar websites which could be potential carriers of security hazards such as Trojans, Ransomware and other viruses. In this regard, we strongly advise you not to come into contact with the advertisements that MatchKnowledge generates and use the suggested instructions to uninstall this software.


Name MatchKnowledge
Type Adware
Danger Level Medium (nowhere near threats like Ransomware, but still a security risk)
Symptoms This program may fill the screen of your browser with various sponsored links, banners and ads.
Distribution Method Commonly found as an additional component to different software bundles, free downloads, browser extensions and ads.
Detection Tool

Uninstall MatchKnowledge “Virus”


We get asked this a lot, so we are putting it here: Removing parasite manually may take hours and damage your system in the process. We recommend downloading ComboCleaner to see if it can detect parasite files for you.

The first thing you need to do is to Quit Safari (if it is opened). If you have trouble closing it normally, you may need to Force Quit Safari:

You can choose the Apple menu and click on Force Quit.

Alternatively you can simultaneously press (the Command key situated next to the space bar), Option (the key right next to it) and Escape (the key located at the upper left corner of your keyboard).

If you have done it right a dialog box titled Force Quit Applications will open up.

In this new dialog window select Safari, then press the Force Quit button, then confirm with Force Quit again.

Close the dialog box/window.



To remove parasite on your own, you may have to meddle with system files and registries. If you were to do this, you need to be extremely careful, because you may damage your system.

If you want to avoid the risk, we recommend downloading ComboCleaner
a professional malware removal tool.

More information on ComboCleaner, steps to uninstallEULA, and Privacy Policy.

Start Activity Monitor by opening up Finder, then proceed to activity-monitor

Once there, look at all the processes: if you believe any of them are hijacking your results, or are part of the problem, highlight the process with your mouse, then click the “i” button at the top. This will open up the following box:


Now click on Sample at the bottom:


Do this for all processes you believe are part of the threat, and run any suspicious files in our online virus scanner, then delete the malicious files:

Drag and Drop Files Here to Scan
Maximum file size: 128MB.

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Scan Results

Virus Scanner Result


The next step is to safely launch Safari again. Press and hold the Shift key while relaunching Safari. This will prevent Safari’s previously opened pages from loading again. Once Safari is opened up, you can release the Shift key.

On the off chance that you are still having trouble with scripts interrupting the closing of unwanted pages in Safari, you may need to take some additional measures.

First, Force Quit Safari again.

Now if you are using a Wi-Fi connection turn it off by selecting Wi-Fi off in you Mac’s Menu. If you are using a cable internet (Ethernet connection), disconnect the Ethernet cable.


Re-Launch Safari but don’t forget to press and hold the Shift button while doing it, so no previous pages can be opened up. Now, Click on Preferences in the Safari menu,

Preferences in Safari

and then again on the Extensions tab,

extensions in safari

Select and Uninstall any extensions that you don’t recognize by clicking on the Uninstall button. If you are not sure and don’t want to take any risks you can safely uninstall all extensions, none are required for normal system operation.

The threat has likely infected all of your browsers. The instructions below need to be applied for all browsers you are using.

Again select Preferences in the Safari Menu, but this time click on the Privacy tab,
Privacy in Safari

Now click on Remove All Website Data, confirm with Remove Now. Keep in mind that after you do this all stored website data will be deleted. You will need to sign-in again for all websites that require any form of authentication.

Still in the Preferences menu, hit the General tab

General Tab in Safari

Check if your Homepage is the one you have selected, if not change it to whatever you prefer.
Default Home Page

Select the History menu this time, and click on Clear History. This way you will prevent accidentally opening a problematic web page again.

firefox-512 How to Remove MatchKnowledge From Firefox in OSX:

Open Firefoxclick on mozilla menu (top right) ——-> Add-onsHit Extensions next.

pic 6

The problem should be lurking somewhere around here –  Remove it. Then Refresh Your Firefox Settings.

chrome-logo-transparent-backgroundHow to Remove MatchKnowledge From Chrome in OSX:

 Start Chrome, click chrome menu icon —–>More Tools —–> Extensions. There,  find the malware and  select  chrome-trash-icon.

pic 8

 Click chrome menu icon again, and proceed to Settings —> Search, the fourth tab, select Manage Search Engines.  Delete everything but the search engines you normally use. After that Reset Your Chrome Settings.

If the guide doesn’t help, download the anti-virus program we recommended or try our free online virus scanner. Also, you can always ask us in the comments for help!

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