The “This Mac Is Not Secure” pop-up alert is a misleading advertising. It is designed in order to trick and force you into calling a fake Apple Support service. If the Mozilla Firefox, Chrome and Safari opens automatically to the “This Mac Is Not Secure” scam then may be possible that you’re a victim of undesired software from the ‘ad-supported’ software (also known as adware) category.
What does Adware do? Some of the more common acts on MAC OSs include: adware can show undesired commercials;adware can reroute your web browser to unwanted sites like the “This Mac Is Not Secure” scam; ad supported software can slow down your MAC; ad-supported software can alter web-browser settings.
The ad supported software can end up on your MAC in various ways. Most often is when you download and install freeware and forget to uncheck the box for the optional programs installation. Do not panic because we have got the solution. Here’s a instructions on how to get rid of “This Mac Is Not Secure” pop up scam from the Chrome, Firefox and Safari and other web browsers.
Remove “This Mac Is Not Secure” pop-up scam (Removal guide)
The answer is right here on this web page. We have put together simplicity and efficiency. It will allow you easily to free your MAC of adware that shows misleading “This Mac Is Not Secure” fake alerts on your Apple Mac. Moreover, you can choose manual or automatic removal solution. If you are familiar with the computer then use manual removal, otherwise use the free anti-malware utility developed specifically to remove ad supported software. Of course, you may combine both methods. Read it once, after doing so, please print this page as you may need to close your internet browser or reboot your Apple Mac.
To remove “This Mac Is Not Secure” pop-up scam, perform the steps below:
- Removing the “This Mac Is Not Secure” scam, check the list of installed software first
- Remove “This Mac Is Not Secure” pop-up scam from Google Chrome
- Delete “This Mac Is Not Secure” pop up from Safari
- Remove “This Mac Is Not Secure” from Firefox by resetting internet browser settings
- Run free malware removal utilities to completely remove “This Mac Is Not Secure” pop up warnings
- Stop “This Mac Is Not Secure” popup warnings and other unwanted web-sites
How to manually remove “This Mac Is Not Secure” pop-up scam
The ad-supported software can change your internet browser settings and reroute you to the webpages which may contain lots of advertisements or various security threats, like browser hijacker infection, malicious software or PUPs. Not every antivirus application can identify and get rid of adware easily from your MAC OS. Follow the few simple steps below and you can delete the “This Mac Is Not Secure” pop up scam by yourself.
Removing the “This Mac Is Not Secure” scam, check the list of installed software first
In order to get rid of PUPs like this ad-supported software, open the Finder and click on “Applications”. Check the list of installed apps. For the ones you do not know, run an Internet search to see if they are adware, browser hijacker or potentially unwanted applications. If yes, delete them off. Even if they are just a programs which you do not use, then removing them off will increase your Apple Mac start up time and speed dramatically.
Open Finder and click “Applications”.
It will show a list of all programs installed on your MAC OS. Scroll through the all list, and remove any questionable and unknown software. Right click to questionable program and choose “Move to Trash”. Another method is drag the program from the Applications folder to the Trash.
Most important, scroll through the all list, and move to trash any unknown applications. Don’t forget, select Finder -> Empty Trash.
Remove “This Mac Is Not Secure” pop-up scam from Google Chrome
Reset Chrome settings will remove “This Mac Is Not Secure” fake alerts from web-browser and disable malicious addons. It will also clear cached and temporary data (cookies, site data and content). Essential information like bookmarks, browsing history, passwords, cookies, auto-fill data and personal dictionaries will not be removed.
Open the Chrome menu by clicking on the button in the form of three horizontal dotes (). It will open the drop-down menu. Choose More Tools, then click Extensions.
Carefully browse through the list of installed extensions. If the list has the plugin labeled with “Installed by enterprise policy” or “Installed by your administrator”, then complete the following instructions: Remove Chrome extensions installed by enterprise policy otherwise, just go to the step below.
Open the Chrome main menu again, click to “Settings” option.
Scroll down to the bottom of the page and click on the “Advanced” link. Now scroll down until the Reset settings section is visible, like below and click the “Reset settings to their original defaults” button.
Confirm your action, click the “Reset” button.
Delete “This Mac Is Not Secure” pop up from Safari
The Safari reset is great if your internet browser is hijacked or you have unwanted addo-ons or toolbars on your browser, which installed by an malicious software.
Click Safari menu and choose “Preferences”.
It will open the Safari Preferences window. Next, click the “Extensions” tab. Look for unknown and suspicious extensions on left panel, select it, then press the “Uninstall” button. Most important to remove all unknown extensions from Safari.
Once complete, click “General” tab. Change the “Default Search Engine” to Google.
Find the “Homepage” and type into textfield “https://www.google.com”.
Remove “This Mac Is Not Secure” from Firefox by resetting internet browser settings
Resetting your Firefox is first troubleshooting step for any issues with your web browser application, including the redirect to “This Mac Is Not Secure” page. Essential information such as bookmarks, browsing history, passwords, cookies, auto-fill data and personal dictionaries will not be removed.
Start the Mozilla Firefox and click the menu button (it looks like three stacked lines) at the top right of the web-browser screen. Next, click the question-mark icon at the bottom of the drop-down menu. It will display the slide-out menu.
Select the “Troubleshooting information”. If you are unable to access the Help menu, then type “about:support” in your address bar and press Enter. It bring up the “Troubleshooting Information” page as shown on the image below.
Click the “Refresh Firefox” button at the top right of the Troubleshooting Information page. Select “Refresh Firefox” in the confirmation prompt. The Mozilla Firefox will start a process to fix your problems that caused by the “This Mac Is Not Secure” adware. When, it’s complete, click the “Finish” button.
Run free malware removal utilities to completely remove “This Mac Is Not Secure” pop up warnings
If you are not expert at computer technology, then we recommend to use free removal utilities listed below to remove “This Mac Is Not Secure” pop-up for good. The automatic solution is highly recommended. It has less steps and easier to implement than the manual solution. Moreover, it lower risk of system damage. So, the automatic “This Mac Is Not Secure” removal is a better option.
How to automatically remove “This Mac Is Not Secure” scam with MalwareBytes Free
Remove “This Mac Is Not Secure” pop up manually is difficult and often the ad supported software is not fully removed. Therefore, we recommend you to use the MalwareBytes that are fully clean your Apple Mac. Moreover, this free application will allow you to remove malicious software, potentially unwanted programs, toolbars and hijacker that your machine may be infected too.
Installing the MalwareBytes Anti-Malware is simple. First you will need to download MalwareBytes Anti-Malware from the link below. Save it to your Desktop.
Category: Security tools
Update: September 10, 2020
When downloading is complete, close all windows on your Apple Mac. Further, open the saved file. Follow the prompts.
The MalwareBytes will automatically run and you may see its main window like below.
Next, press the “Scan Now” button . MalwareBytes AntiMalware utility will start scanning the whole machine to find out ad-supported software that causes multiple misleading “This Mac Is Not Secure” alerts and pop ups. Depending on your MAC OS, the scan may take anywhere from a few minutes to close to an hour. While the MalwareBytes Free program is checking, you can see how many objects it has identified as threat.
Once the system scan is finished, you can check all items detected on your MAC system. Review the scan results and then click “Remove Selected Items” button.
The MalwareBytes AntiMalware (MBAM) will delete adware that displays misleading “This Mac Is Not Secure” pop-up on your MAC system and move items to the program’s quarantine.
Stop “This Mac Is Not Secure” popup warnings and other unwanted web-sites
It’s also critical to protect your web-browsers from harmful web pages and ads by using an ad-blocker program like AdGuard. Security experts says that it’ll greatly reduce the risk of malicious software, and potentially save lots of money. Additionally, the AdGuard can also protect your privacy by blocking almost all trackers.
Visit the following page to download AdGuard.
Author: © Adguard
Category: Security tools
Update: January 17, 2018
Once the downloading process is finished, launch the downloaded file. You will see the “Setup Wizard” screen. Follow the prompts.
Each time, when you launch your MAC OS, AdGuard will start automatically and stop unwanted ads, “This Mac Is Not Secure” scam, as well as other malicious or misleading sites.
Don’t know how your web-browser has been hijacked by adware
Now your MAC should be free of the adware that causes misleading “This Mac Is Not Secure” popup scam on your internet browser. We suggest that you keep AdGuard (to help you block unwanted pop up ads and unwanted harmful sites) and MalwareBytes Free (to periodically scan your machine for new adwares and other malicious software).
If you are still having problems while trying to remove “This Mac Is Not Secure” pop up scam from the Chrome, Safari and Firefox, then ask for help here here.