Cover Open Mac App

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

Download SpyHunter Anti-Malware

More information on SpyHunter, steps to uninstallEULAThreat Assessment Criteria, and Privacy Policy.


Cover Open

Cover Open is a browser hijacker malware. Cover Open may introduce unwelcome changes in the browser’s settings, trigger page-redirects, and display ads that may expose your system to danger.

Cover Open

The Cover Open App for Mac may cause pop ups.

In the event that some aggressive advertisements and automatic page-redirects have started to disturb your regular web browsing, then a browser hijacker called Cover Open might have taken over your browser. No, this is not a virus infection, but a particular type of software created specifically to show countless pop-ups, banners, ads, and sponsored links on your screen with the idea to generate pay-per-click revenue from your clicks. Typically, the browser hijacker can integrate with any browser – Chrome, Firefox, Safari or another one, and impose some modifications on it, so that you are forced to see as many advertisements, and promotional sites as possible. For instance, Cover Open may have your homepage or your search engine replaced without your approval. And if you really don’t want to experience this kind of disturbance every time you go on the Internet, the information below could help you. We will explain how the browser hijackers work, and how to remove their changes and uninstall them. So if you remain with us, you’ll be able to get rid of Cover Open, and restore your previous browser settings.

The CoverOpen App

Cover Open is what most experts would call a browser hijacker. Cover Open may introduce unwanted changes to your browser’s settings, and flood it with potentially unsafe ads.

When Cover Open is running on your computer, you can easily recognize it, as it generally applies some unwanted modifications in your main browser. You may typically notice a new homepage, a new search engine, or some new toolbars, which constantly redirect you to specific sites, most of which, filled with different ads, banners and pop-ups.

Such behavior is generally regarded as legal since it is part of an online advertising strategy which isn’t typically not harmful. Applications such as Cover Open are frequently used to display paid advertisements, as well as to generate revenue through methods like pay-per-click, pay-per-view, or sponsored ads positioning. Many browser hijacker developers gain some profits from the clicks on the generated advertisements.

Cover Open for Mac

Cover Open is a software of the browser hijacker type. People mainly complain that Cover Open replaces their default homepage, and search engine, but it may also cause security issues.

The higher the number of ads the software generates, the higher the chances of you clicking on them, and the higher the revenue earned at the end. This briefly explains why you’re getting bombarded with so many promotional messages, and automatic redirects, and why they’re so intrusive.

Software such as Cover Open could be very aggressive when it comes to loading your screen with pop-ups, banners and promotional messages. Besides, its imposed homepage, or search engine tools may not be easy to remove from your browser. This is why some web users may think they have lost control over their browser, and that their systems have been invaded by a virus.

What is Cover Open?

Cover Open is a browser hijacker. The main issues with Cover Open are the changes it may make in the homepage, or the default search engine, and the invasive ads it may show.

Fortunately, this is not the case with browser hijackers. These programs have little in common with infections such as Ransomware, or Trojans, and cannot replicate like computer viruses. Their behavior is more irritating than malicious, since there is no harmful code in such programs that could destroy your system, or corrupt your files. A real malware like a Ransomware, on the other hand, can lock your files with encryption, and blackmail you for your access to them.

However, despite not being a security threat, a program like Cover Open may potentially expose you to some security hazards if you are careless with where you click. That includes clicking on fake advertisements, or on misleading links that can eventually sneak through the stream of regular ads, and infect you with malware. Even the sponsored page redirects can sometimes land you on unsafe websites or on phishing pages. It is, therefore, a good idea to avoid this as much as possible by not clicking on randomly generated advertisements, and posts. An even better option is to follow the directions in the removal manual below to uninstall the browser hijacker once and for all.


Name Cover Open
Type  Browser Hijacker
Danger Level Medium (nowhere near threats like Ransomware, but still a security risk)
Symptoms  You may typically notice a change in the browser’s homepage or the main search engine.
Distribution Method Software bundling is a common distribution method for such programs.
Detection Tool

Remove Cover Open Mac App 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 SpyHunter 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 SpyHunter
a professional malware removal tool.

More information on SpyHunter, steps to uninstallEULAThreat Assessment Criteria, 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.

This scanner is free and will always remain free for our website's users. You can find its full-page version at:

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 Cover Open 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 Cover Open 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!


Leave a Comment