All malware on iOS typically attempt to steal accounts and it is very difficult to determine whether your passwords are safe. We recommend downloading Cyclonis Password Manager to secure your data.

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Greacore is a rogue iPhone app that has been created for the purpose of popularizing certain products and sites on the device’s screen. Greacore tends to acquire extensive permissions in the iPhones it gets installed on, potentially compromising the safety of the devices.


The Greacore Virus will display pop up messages and ads.

All these changes, ads, and redirects are supposed to make money for the people behind Greacore. However, in doing so, they could also expose your device to much more serious dangers, including phishing viruses, Trojans, Ransomware, Spyware, and more. Depending on what permissions this unwanted app has acquired, it may collect information about your browsing history, currently installed apps, iOS version, location, and more. This info is mainly sold to other online advertisers or used by the creators of Greacore themselves for the purposes of customizing the ads you see and making them more relevant to you so that you’d tap on them more often. However, there’s no way of knowing if this info won’t also be used in other, more harmful ways.

This app is probably not something you’d enjoy having on your iPhone because, as soon as gets installed, it starts to display pop-ups, ads, and banners on the device’s display while you are connected to the Internet. It is also likely to cause your Safari to redirect you to sites you’ve never heard of and/or change the default search engine of the browser. The homepage of Safari may, too, get modified or outright replaced by

All in all, if you want to protect your device, we advise you to complete the removal guide below so that the unwanted app is fully uninstalled.

Greacore Removal

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.


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.


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/


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. 

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