Mac Virus

System Warning Mac

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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System Warning

System Warning is a browser hijacker type of a security nuisance. System Warning is categorized by the website redirects and pop-up ads it causes but it could potentially lead to even more serious problems.

System Warning

The System Warning Virus will display pop up messages and ads.

Online ads are the worst, right? They show on your screen while you are browsing and cover any relevant content that you actually want to see with various intrusive (and oftentimes misleading) offers that mostly only prevent you from enjoying your time online and/or doing your job. However, if a stream of ads is coming from a certain website, you can at least stop visiting the said site or you can get an ad-blocker and that way stop at least some of the ads you’d otherwise see. However, if you have an app such as System Warning “Virus” on your PC, then neither of those methods would be effective with getting rid of the ads and page redirects you see in your Edge, Opera, Chrome, Firefox or any other browser. If you have this app on your PC, the search engine, the starting page and the new-tab page of your browser are also likely to get changed in addition to the constant generation of pesky banners, pop-ups, blinking boxes and other similar advertising contents. System Warning “Virus” is what is known as a browser hijacker – it is an app that initially looks like any other extension for your browser but soon after it’s installed on your machine, it would show its true colors and it’s around this time that you realize this app is not something you’d like to keep on your PC. Unfortunately, it’s oftentimes not so easy to uninstall a hijacker. Most such apps are programmed in a way that makes them somewhat difficult or tricky to get rid of. They might lack an uninstallation wizard and there might be no entry for them in the list of installed programs in your Control Panel. Also, it is likely that even if you try to change your browser back to normal, the intrusive hijacker would re-impose its changes as soon as you start a new browsing session or reboot your PC. However, all of this is not to say that removing System Warning “Virus”cannot be done. Note that eliminating a hijacker, though a bit tricky at times, is nowhere near as difficult as it is dealing with an actual malware virus (like a Trojan, a Ransomware, a Spyware or some other nasty threat). Now, we can help you deal with the System Warning “Virus” annoyance in case you are currently struggling with it – down below, you will find a guide that has all the needed instructions, screenshots and steps to aid you in the uninstallation of the hijacker. However, it’s a good idea to first finish reading this write-up in order to learn some more essential information about apps like System Warning, Search Baron or Bing Redirect.

System Warning is on Mac

Researchers have labeled System Warning a browser hijacker. Security problems such as System Warning are known to cause website redirects, intrusive advertisements and even phishing attempts.

We already pointed out that browser hijackers are not the same as viruses and are certainly not as dangerous as malicious and noxious malware threats the likes of Trojans, Worms, Ransomware, Spyware and so on. That being said, the sheer intrusiveness and irritation that comes from most hijackers is more than enough for most users and security researchers to regard them as potentially unwanted. Furthermore, although there’s usually no malicious code inside most hijackers, their activities might still lead to the exposure of your computer to various security risks. One important example here is the advertising materials generated by such software and their potential to be unsafe at times. Sure, not every advert coming from a hijacker is a security risk but some of them might as well be. It’s, therefore, safer to keep your distance from them and, of course, the best way to do that is to simple eliminate their source which in this case would be System Warning.

The System Warning Virus

System Warning is categorized as a browser hijacker by security experts. System Warning is known to cause browser redirects and different pop-up advertisements in addition to security vulnerabilities.

Some apps that fall under this category have official sites but in most cases users get browser hijacker installed on their machines in other ways (usually without even realizing it). For instance, spam e-mails and misleading Internet offers, download suggestions and ads are oftentimes used as tools for hijacker distribution. Also, it is really common for such a unwanted app to get bundled with another program and get installed alongside it. That is why, you ought to be really considerate regarding the pages you visit online and regarding the content you interact with. Also, be sure to always be in control of the installation of any new piece of software you have downloaded on your PC. It’s preferable if you use the Advanced/Expanded setup settings instead of the Quick/Default ones, as the latter are likely to have the installation of any bundled content enabled by default. On the flip side, using the Advanced/Custom options would allow you to leave ou anything you might not want to have on your PC which is exactly what we’d advise you to do.


Name System Warning
Type Browser Hijacker
Danger Level Medium (nowhere near threats like Ransomware, but still a security risk)
Symptoms Anything from unwanted changes to your browser to frequent page redirects and generation of random web-ads on your screen.
Distribution Method Software bundling, spam, questionable downloads, misleading pages, fake offers, etc.
Detection Tool

System Warning Pop up Removal


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:

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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 System Warning 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 System Warning 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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