What is Default Upgrade?

Default Upgrade is allegedly an useful free application that should enhance your experience while surfing the Internet. But unfortunately it is just another Adware and PUP which only makes troubles and gives your terrible experience, thus you should remove it as soon as you can. Our researchers have found that Default Upgrade can infiltrate your system through freeware, torrent files, spam emails and porn websites.

Once loaded, your Microsoft Edge, Chrome, IE or other web browser will be hijacked with ad-supported extensions related with Default Upgrade. Then when you open any website, the page will be flooded with ads by Default Upgrade and you can do anything normally. Moreover, clicking the ads may cause more security problems since they get you redirected to insecure websites. Therefore, it’s better not clicking any Default Upgrade ads once you see them on your

What’s more, Default Upgrade has been programmed to gather your system data and even your sensitive information without your knowledge. Basically, Default Upgrade read your browser history and cookies to get data such as browser type and version, system language, search queries , type of operation system and most viewed websites. It share these data with remote server so that customized ads will be made and sent to your screen to lure you to click and buy something. More severely, Default Upgrade helps spyware and even hacker enter your system to attack your accounts and steal your sensitive information like email, social network accounts, and banking accounts. In that situation, online fraud may happen to you and you will have to suffer from financial loss. All in all, Default Upgrade is an unsafe application that you should not keep on your system. For safety of your PC and privacy, get rid of it immediately with the removal guide below

How to remove Default Upgrade From Mac OS?

(If have Default Upgrade or other virus on Windows OS, Please Use Guide – How to Remove Virus & Malware From Windows OS. )

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NOTE – Some operations in the removal process may require you to exit this page or restart computer, Please Bookmark This Page first For later reference.

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Step 1: Uninstall Default Upgrade Related Apps or unwanted apps From Mac.

• Open the Finder
• Go to the Application folder
• Move unneeded applications to Trash
• Enter your password if requested.

Important Note! Default Upgrade may re-infect your Mac multiple times if you do not remove its core files and related malware. To get rid of the virus forever, we recommend downloading Combo Cleaner Antivirus to scan entire Mac and find out all malware: Download Combo Cleaner Antivirus For Mac  More information about Combo Cleaner, steps to uninstall, EULA, and Privacy Policy.

Step 2. Remove Default Upgrade Related Extension or unwanted Extensions from Safari, Chrome and Firefox on Mac.

Delete Safari Extension

• Launch Safari
• Click on the Safari menu and choose Preferences.
• Select the Extensions pane
• To delete an extension completely, click on it, then in the main window, choose Uninstall.

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Delete Chrome Extension

Launch Chrome >> Click the three-dot icon in the upper-right corner >> Select the More Tools >> Click Extensions >> Determine the suspicious or unwanted extension, click on the Trash icon >> Click Remove

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Delete Firefox Extension

Launch Firefox >> Click the menu button from the browser’s right pane >> select Add-ons from the drop-down list >> Determine the suspicious or unwanted extension, click the Disable or Remove button.

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Step 3. Download Combo Cleaner Anti-Virus to Diagnose Entire Mac. (Important!)

Default Upgrade may not be the only virus harming your Mac. When such threat enters your Mac, it may bring in more infections. So we suggest you checking your entire system to see if there is any other infections. To do this quickly and easily, you can download Combo Cleaner Antivirus, a top-rated Mac Anti-virus Tool which makes Mac protection easy and simple for every Mac user. It use advanced security features to protect your Mac from phishing scams, malware, spyware, adware, and viruses. When your Mac is equipped with Combo Cleaner Antivirus, you not only get the safe online browsing and real-time protection, but also enjoy the full speed system performance . Follow instructions below to use Combo Cleaner if you’d like to try it:

1. Click on Download link below to get Combo Cleaner Antivirus Now.

Download Combo Cleaner Antivirus For Mac

More information about Combo Cleaner, steps to uninstall, EULA, and Privacy Policy. 

2. Click on “combocleaner.dmg ” to install Combo Cleaner Antivirus:

3. Once installed, run a scan to diagnose the security conditions of your Mac:

4. If Default Upgrade or related unwanted apps are still on your Mac, you can use App Uninstaller of Como Cleaner and see if it can uninstall the unwanted or suspicious apps.

5. Use Antivirus tool of Combo Cleaner to re-check your Mac and determine if there is any hiding threats: