Remove Mac-system-alert.com pop-up from Apple Mac OS X

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Written by: Stelian Pilici

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If you are seeing random pop-up ads from Mac-system-alert.com within Safari, Firefox and Google Chrome, then your Apple Mac OS X is infected with an adware or a potentially unwanted application.
Mac-system-alert.com Virus
The Mac-system-alert.com pop-ups are caused by an ad-supported extension for Safari, Firefox and Chrome, which is distributed through various monetization platforms during installation. The malicious browser extensions is typically added when you install another free software (video recording/streaming, download-managers or PDF creators) that had bundled into their installation this adware program.
When an adware extension is installed on your computer, whenever you will open a new tab within Safari, Firefox and Google Chrome, an ad from Mac-system-alert.com will pop-up. Other common symptoms include:

  • Advertising banners are injected with the web pages that you are visiting.
  • Random web page text is turned into hyperlinks.
  • Browser popups appear which recommend fake updates or other software.
  • Other unwanted adware programs might get installed without the user’s knowledge.

You should always pay attention when installing applications because often, a software installer includes optional installs, such as this program that is causing the Mac-system-alert.com redirect. Be very careful what you agree to install.
Always opt for the custom installation and deselect anything that is not familiar, especially optional software that you never wanted to download and install in the first place. It goes without saying that you should not install software that you don’t trust.

How to remove Mac-system-alert.com pop-up ads from Apple Mac OS X

This page is a comprehensive guide, which will remove Mac-system-alert.com pop-up ads from Apple Mac OS X, and any other adware program that may have been installed during the setup process.
Please perform all the steps in the correct order. If you have any questions or doubt at any point, STOP and ask for our assistance.

STEP 1: Remove Mac-system-alert.com pop-up ads from Safari, Google Chrome and Firefox

Remove from Safari (Mac OS X)

  1. From the Safari menu, select “Preferences“.
    Safari Mac OS X Preferences
    In the Safari Preferences window, click the “Extensions” tab. Find the “Mac-system-alert.com” plugin, then click on the “Uninstall” button. This infection can add more than one extension, it is recommended that you remove all unknown extensions from Safari.
    Known malicious extensions: MacSaver, MacVX (and variants like MacVaX), MacCaptain, MacPriceCut, SaveOnMac, Mac Global Deals or MacDeals, MacSter, MacXcoupon, Shop Brain (or variants like SShoP Braaiin), PalMall, MacShop, MacSmart, News Ticker Remover, Shopper Helper Pro, Photo Zoom, Best YouTube Downloader, ArcadeYum, Extended protection, Video download helper, FlashFree or GoldenBoy
    Delete
  2. Next, select “Preferences“, go to the “General” tab and change the “Default Search Engine” to Google. Then, in the “General” tab, find the “Home Page” and change it to “google.com”.
    Remove

Remove from Chrome (Mac OS X)

  1. Click on Chrome’s main menu button, represented by three horizontal lines ([Image: Chrome's main menu button]) .When the drop-down menu appears, select the option labeled Settings.
    [Image: Click on Settings button]
  2. Chrome’s Settings should now be displayed in a new tab or window, depending on your configuration. Next, scroll to the bottom of the page and click on the Show advanced settings link (as seen in the below example).
    [Image: Click on Show advanced settings link]
  3. Chrome’s advanced Settings should now be displayed. Scroll down until the Reset browser settings section is visible, as shown in the example below. Next, click on the Reset browser settings button.
    [Image: Click on Reset browser button]
  4. A confirmation dialog should now be displayed, detailing the components that will be restored to their default state should you continue on with the reset process. To complete the restoration process, click on the Reset button.
    [Image: Click on Reset button to restore Chrome to default settings]

Remove from Firefox (Mac OS X)

  1. In the Firefox’s address bar type: about:support, then click on Enter.
  2. Click the “Reset Firefox” button in the upper-right corner of the “Troubleshooting Information” page.
    [Image: Reset Firefox to its default settings]
  3. To continue, click on the “Reset Firefox” button in the new confirmation window that opens.
    [Image: Click on the Reset Firefox button]
  4. Firefox will close itself and will revert to its default settings. When it’s done, a window will list the information that was imported. Click on the “Finish“.

(Optional) STEP 2: Remove Mac-system-alert.com pop-up ads with AdwareMedic

If you are still experiencing issues with the “Mac-system-alert.com” in Safari, Firefox or Chrome, we will need to run a scan with Adware Medic. This step needs to be performed only if your issues have not been solved by the previous steps.
Adware Medic is a powerful tool which is designed to remove adware and browser hijackers from Apple Mac OS X.

  1. You can download AdwareMedic from the below link:
    ADWAREMEDIC DOWNLOAD LINK (This link will open a new web page from where you can download “AdwareMedic”)
  2. One you have downloaded AdwareMedic, please perform a scan as see in the below video:
How to Stay Safe Online

Here are 10 basic security tips to help you avoid malware and protect your device:

  1. Use a good antivirus and keep it up-to-date.

    Shield Guide

    It's essential to use a good quality antivirus and keep it up-to-date to stay ahead of the latest cyber threats. We are huge fans of Malwarebytes Premium and use it on all of our devices, including Windows and Mac computers as well as our mobile devices. Malwarebytes sits beside your traditional antivirus, filling in any gaps in its defenses, and providing extra protection against sneakier security threats.

  2. Keep software and operating systems up-to-date.

    updates-guide

    Keep your operating system and apps up to date. Whenever an update is released for your device, download and install it right away. These updates often include security fixes, vulnerability patches, and other necessary maintenance.

  3. Be careful when installing programs and apps.

    install guide

    Pay close attention to installation screens and license agreements when installing software. Custom or advanced installation options will often disclose any third-party software that is also being installed. Take great care in every stage of the process and make sure you know what it is you're agreeing to before you click "Next."

  4. Install an ad blocker.

    Ad Blocker

    Use a browser-based content blocker, like AdGuard. Content blockers help stop malicious ads, Trojans, phishing, and other undesirable content that an antivirus product alone may not stop.

  5. Be careful what you download.

    Trojan Horse

    A top goal of cybercriminals is to trick you into downloading malware—programs or apps that carry malware or try to steal information. This malware can be disguised as an app: anything from a popular game to something that checks traffic or the weather.

  6. Be alert for people trying to trick you.

    warning sign

    Whether it's your email, phone, messenger, or other applications, always be alert and on guard for someone trying to trick you into clicking on links or replying to messages. Remember that it's easy to spoof phone numbers, so a familiar name or number doesn't make messages more trustworthy.

  7. Back up your data.

    backup sign

    Back up your data frequently and check that your backup data can be restored. You can do this manually on an external HDD/USB stick, or automatically using backup software. This is also the best way to counter ransomware. Never connect the backup drive to a computer if you suspect that the computer is infected with malware.

  8. Choose strong passwords.

    lock sign

    Use strong and unique passwords for each of your accounts. Avoid using personal information or easily guessable words in your passwords. Enable two-factor authentication (2FA) on your accounts whenever possible.

  9. Be careful where you click.

    cursor sign

    Be cautious when clicking on links or downloading attachments from unknown sources. These could potentially contain malware or phishing scams.

  10. Don't use pirated software.

    Shady Guide

    Avoid using Peer-to-Peer (P2P) file-sharing programs, keygens, cracks, and other pirated software that can often compromise your data, privacy, or both.

To avoid potential dangers on the internet, it's important to follow these 10 basic safety rules. By doing so, you can protect yourself from many of the unpleasant surprises that can arise when using the web.

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