Critical Threat iPhone Message

Critical threat

Critical threat has been infecting the Chrome, Firefox, Edge and other popular iPhone browsers as of late. Once in the browser, Critical threat will alter its settings and cause the display of myriads of online ads on your screen.

Critical Threat iPhone Message

The Critical Threat Pop up on iPhone.

This is why experts identify Critical threat as your typical browser hijacker. And the settings that it is most likely to affect are those relating to your homepage and default search engine, for example. In addition, Critical threat is also likely to add a new toolbar to the browser in question, and it will also certainly install an ad-generating element, as this is its main goal. Furthermore, aside from showcasing numerous banners, box messages, popups and other online advertising materials, software like this also has a strong tendency to initiate page redirects.

The Critical Threat iPhone Message

Browser hijackers, like the Critical Threat iPhone Message, as you may have already guessed it, exist primarily for the purpose of promoting various products, services and websites. This is why they change your homepage and/or search engine and display pop up messages for example – to generate more hits for these respective sites.

This means that as you’re busy browsing the web, your browser may spontaneously decide to reroute you to some sponsored web location – regardless of how relevant it is to you. If all of this sounds familiar, then chances are pretty high that you may be eager to remove this program from your computer. And below we have put together a removal guide that will show you exactly how you may accomplish this.

The Critical Threat Virus

Now, although the Critical Threat “Virus” is not actually a virus and may sound fairly harmless until now, there are actually more serious potential consequences associated with the presence of a browser hijacker in your system. For one, the constant generation of ads on your screen does pull on system resources, and this may compromise the overall performance of your machine.

For another, with the hijacker’s tendency to constantly redirect your searches to questionable web locations, you run the risk of sooner or later encountering some virus or malware. In fact, we’re talking highly dangerous pieces of malicious programming, such as Trojans and even ransomware. Therefore, to avoid potentially coming across any viruses, we recommend abstaining from any interaction with the content displayed by Critical threat. And you can altogether minimize this risk by removing the hijacker from your OS with the help of the below instructions.

The developers of these types of applications profit from the display of these paid ads. Normally this happens in accordance with popular remuneration schemes such as Pay Per Click. Thus, every time you click on a banner or box message, the developers earn some small commission. And for this reason, the ads generated by Critical threat are typically positioned in the most annoying way, so that you can’t avoid clicking on them. Furthermore, you may have noticed that this browser hijacker doesn’t exactly come with a designated uninstallation button. Obviously, its creators would like to have their application remain on your computer for as long as possible, and they won’t provide you with an easy way to remove it.


Name Critical Threat
Type Browser Hijacker
Danger Level Medium (nowhere near threats like Ransomware, but still a security risk)
Symptoms Page redirects, large quantities of online ads appearing on your screen, changes made to your browser homepage and/or its default search engine. 
Distribution Method Program bundles that are typically distributed on different kinds of file-sharing platforms – usually for free. 

Remove Critical Threat iPhone Virus

If you have an iPhone virus, continue with the guide below.

If you have an Android virus, please use our Android Malware Removal guide.

If you have a Mac virus, please use our How to remove Ads on Mac guide.

If you have a Windows virus, please use our Windows Virus Removal guide.

Critical Threat iPhone Message

First you need to close all pop-ups that are currently open.

  • If the pop-up has a checkbox named “Don’t show more alerts from this webpage” click on the checkbox before closing the Ad.
  • If a Block Alerts button happens to appear after you shut down a pop-up on your iPhone, iPad, or iPod touch tab that button to stop receiving alerts from the same page.

In case that a pop-up fails to close after performing the above operations:

  • On your Mac you should make your Safari browser close forcibly by pressing Command-Option-Esc. Select Safari from the list of Apps and force close it. After you force close it you need to restart Safari, but please hold the shift button while it starts. This will prevent any pesky Ads from opening automatically.
  • On your iPhone, iPad, or iPod touch you can do the same by pressing the home button twice in a quick succession. You’ll then see a preview of all apps that have been recently used. Swipe left to find Safari and then swipe up on the app’s preview to close it forcibly In order to prevent Safari from opening unwanted windows on startup go to Settings->Safari and Clear History, as well as Website Data. This will also clear your browser history and cookies so keep that in mind and export them if you want to keep them.

Critical Threat iPhone Message

Choose Preferences from the Safari menu. Then do the following:

  1. Select the Security icon and then click on “Block pop-up windows“. This should stop many types of pop-ups from appearing.
  1. Next check on your homepage and the settings for the search engines. Adware likes messing with those. We can not provide more specific instructions for this, as you may be using many different browsers.
    • Select the General icon and look at the Homepage field. It should either be empty or filled with the address of the Homepage you want.
    • Follow up on the Search icon. Again it should be either the default search engine or any that you have set for yourself. Note that in some versions of Safari these settings are found in the General panel/

Critical Threat iPhone Message

Open Safari and click on the Extensions button. Note that Adware use extensions almost exclusively to inject the pop-up Ads into your browser. Any extension on this list that you do not remember installing yourself is likely planted there by the Adware. Remove ALL extensions you are unfamiliar with. 



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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