How to uninstall the Mac Security application?

Also Known As: Mac Security fake antivirus
Type: Mac Virus
Distribution: Low
Damage level: Medium

How to remove Mac Security from Mac?

What is Mac Security?

As its name suggests, Mac Security supposed to be an antivirus application. However, it only looks like one. More precisely, Mac Security does not detect any real threats and removes them. On the contrary, it opens potentially malicious websites. Therefore, this app should not be trusted (downloaded and installed). It is very likely that this app is distributed using questionable methods and some users may install it unknowingly. Therefore, this app is categorized as potentially unwanted application (PUA).

Mac Security unwanted application

Mac Security is designed to look like an app that scans computers for threats and removes them. However, research shows that this app is designed to promote questionable websites. At the time of the research it opened at least one adult website and a number of other shady sites. It is likely that Mac Security could open various scam pages, download pages for adware-type apps, browser hijackers, or even malicious sites designed to trick visitors into installing some malware. In one way or another, neither pages that Mac Security opens or the app it self are trustworthy. Therefore, it is strongly recommended not to download and install Mac Security or any other similar app.

It is worthwhile to mention that Mac Security detects fake threats and does not allow to remove them if it is not registered (purchased). Simply said, it is designed to trick users into paying money for its registration by generating fake scan results. Another problem with apps like this one is that they tend to be distributed alongside with other potentially unwanted applications (like adware-type apps, browser hijackers). If there is some PUA already installed on the operating system (or a browser), then it should be removed as soon as possible.

Threat Summary:
Name Mac Security fake antivirus
Threat Type PUP (potentially unwanted program), PUA (potentially unwanted application), Mac malware, Mac virus
Supposed Functionality Removal of malware
Detection Names Avast (MacOS:MacDefender [Trj]), BitDefender (MAC.OSX.Trojan.FakeAlert.L), ESET-NOD32 (OSX/Adware.MacDefender.D), Kaspersky (Hoax.OSX.Defma.gen), Full List Of Detections (VirusTotal)
Symptoms A program that you do not recall installing suddenly appeared on your computer. A new application is performing computer scans and displays warning messages about 'found issues'. Asks for payment to eliminate the supposedly found errors.
Distribution Methods Deceptive pop-up ads, free software installers (bundling), fake Flash Player installers.
Damage Monetary loss (unnecessary purchase of fake software), unwanted warning pop-ups, slow computer performance.
Malware Removal (Mac)

To eliminate possible malware infections, scan your Mac with legitimate antivirus software. Our security researchers recommend using Combo Cleaner.
▼ Download Combo Cleaner for Mac
To use full-featured product, you have to purchase a license for Combo Cleaner. Limited three days free trial available.

More examples of PUAs that may be designed to generate fake scan results and are categorized as PUAs are Quick Mac Fixer, MacMaster and MacCleanBooster. As a rule, such apps are advertised as legitimate, useful, however, not all of them are. It is advised to use only reputable applications and never pay money for apps that not.

How did potentially unwanted applications install on my computer?

Some users download and/or install PUAs through deceptive advertisements that are designed to execute certain scripts - when users click those ads. However, most users download and/or install PUAs together with other programs, when PUAs are integrated in their download and/or installation setups as additional offers. This distribution method is called "bundling". Typically, the aforementioned offers can be declined via "Custom", "Advanced" and other similar settings, or by unticking certain checkboxes that are available in setups. Users who download and/or install programs checking (and changing) those settings allow for included PUAs to be downloaded and/or installed too.

How to avoid installation of potentially unwanted applications?

It is advised not to use Peer-to-Peer networks (like eMule, torrent clients), unofficial pages, third party downloaders, installers, etc., as sources, tools to download or install software. Programs, files should be downloaded only from official websites and via direct download links. Also, it is recommended to analzye download or installation setups that have settings like "Advanced", "Manual, "Custom", or include some checkboxes - they should be checked for offers to download and/or install unwanted apps. Intrusive ads that appear on questionable pages should not be clicked - they can be designed either to open other untrustworthy pages or even execute scripts that cause download and/or installation of unwanted application. Any unwanted, suspicious or unknown extensions, add-ons or plug-ins that are already installed on a browser should be removed. Programs of this kind that that are installed on the operating system should be uninstalled too. If your computer is already infected with PUAs, we recommend running a scan with Combo Cleaner Antivirus for macOS to automatically eliminate them.

Appearance of Mac Security application (GIF):

Appearance of Mac Security PUA (GIF)

Adult website opened by Mac Security:

mac security unwanted application promoted adult site

Screenshot of Mac Security loading its fake database:

mac security unwanted application loading window

Screenshot of Mac Security running in Activity Monitor:

mac security unwanted application running in activity monitor

Instant automatic Mac malware removal: Manual threat removal might be a lengthy and complicated process that requires advanced computer skills. Combo Cleaner is a professional automatic malware removal tool that is recommended to get rid of Mac malware. Download it by clicking the button below:
▼ DOWNLOAD Combo Cleaner for Mac By downloading any software listed on this website you agree to our Privacy Policy and Terms of Use. To use full-featured product, you have to purchase a license for Combo Cleaner. Limited three days free trial available.

Quick menu:

Video showing how to remove adware and browser hijackers from a Mac computer:

Potentially unwanted applications removal:

Remove potentially unwanted applications from your "Applications" folder:

mac browser hijacker removal from applications folder

Click the Finder icon. In the Finder window, select "Applications". In the applications folder, look for "MPlayerX", "NicePlayer", or other suspicious applications and drag them to the Trash. After removing the potentially unwanted application(s) that cause online ads, scan your Mac for any remaining unwanted components.

Remove mac security fake antivirus related files and folders:

Finder go to folder command

Click the Finder icon, from the menu bar. Choose Go, and click Go to Folder...

step1Check for adware-generated files in the /Library/LaunchAgents folder:

removing adware from launch agents folder step 1

In the Go to Folder... bar, type: /Library/LaunchAgents

removing adware from launch agents folder step 2
In the “LaunchAgents” folder, look for any recently-added suspicious files and move them to the Trash. Examples of files generated by adware - “installmac.AppRemoval.plist”, “myppes.download.plist”, “mykotlerino.ltvbit.plist”, “kuklorest.update.plist”, etc. Adware commonly installs several files with the same string.

step2Check for adware generated files in the /Library/Application Support folder:

removing adware from application support folder step 1

In the Go to Folder... bar, type: /Library/Application Support

removing adware from application support folder step 2
In the “Application Support” folder, look for any recently-added suspicious folders. For example, “MplayerX” or “NicePlayer”, and move these folders to the Trash.

step3Check for adware-generated files in the ~/Library/LaunchAgents folder:

removing adware from ~launch agents folder step 1


In the Go to Folder bar, type: ~/Library/LaunchAgents

removing adware from ~launch agents folder step 2

In the “LaunchAgents” folder, look for any recently-added suspicious files and move them to the Trash. Examples of files generated by adware - “installmac.AppRemoval.plist”, “myppes.download.plist”, “mykotlerino.ltvbit.plist”, “kuklorest.update.plist”, etc. Adware commonly installs several files with the same string.

step4Check for adware-generated files in the /Library/LaunchDaemons folder:

removing adware from launch daemons folder step 1
In the Go to Folder... bar, type: /Library/LaunchDaemons

removing adware from launch daemons folder step 2
In the “LaunchDaemons” folder, look for recently-added suspicious files. For example “com.aoudad.net-preferences.plist”, “com.myppes.net-preferences.plist”, "com.kuklorest.net-preferences.plist”, “com.avickUpd.plist”, etc., and move them to the Trash.

step 5 Scan your Mac with Combo Cleaner:

If you have followed all the steps in the correct order you Mac should be clean of infections. To be sure your system is not infected run a scan with Combo Cleaner Antivirus. Download it HERE. After downloading the file double click combocleaner.dmg installer, in the opened window drag and drop Combo Cleaner icon on top of the Applications icon. Now open your launchpad and click on the Combo Cleaner icon. Wait until Combo Cleaner updates it's virus definition database and click "Start Combo Scan" button.

scan-with-combo-cleaner-1

Combo Cleaner will scan your Mac for malware infections. If the antivirus scan displays "no threats found" - this means that you can continue with the removal guide, otherwise it's recommended to remove any found infections before continuing.

scan-with-combo-cleaner-2

After removing files and folders generated by the adware, continue to remove rogue extensions from your Internet browsers.

Mac Security fake antivirus removal from Internet browsers:

safari browser iconRemove malicious extensions from Safari:

Remove mac security fake antivirus related Safari extensions:

safari browser preferences

Open Safari browser, from the menu bar, select "Safari" and click "Preferences...".

safari extensions window

In the preferences window, select "Extensions" and look for any recently-installed suspicious extensions. When located, click the "Uninstall" button next to it/them. Note that you can safely uninstall all extensions from your Safari browser - none are crucial for normal browser operation.

  • If you continue to have problems with browser redirects and unwanted advertisements - Reset Safari.

firefox browser iconRemove malicious plug-ins from Mozilla Firefox:

Remove mac security fake antivirus related Mozilla Firefox add-ons:

accessing mozilla firefox add-ons

Open your Mozilla Firefox browser. At the top right corner of the screen, click the "Open Menu" (three horizontal lines) button. From the opened menu, choose "Add-ons".

removing malicious add-ons from mozilla firefox

Choose the "Extensions" tab and look for any recently-installed suspicious add-ons. When located, click the "Remove" button next to it/them. Note that you can safely uninstall all extensions from your Mozilla Firefox browser - none are crucial for normal browser operation.

  • If you continue to have problems with browser redirects and unwanted advertisements - Reset Mozilla Firefox.

chrome-browser-iconRemove malicious extensions from Google Chrome:

Remove mac security fake antivirus related Google Chrome add-ons:

removing malicious google chrome extensions step 1

Open Google Chrome and click the "Chrome menu" (three horizontal lines) button located in the top-right corner of the browser window. From the drop-down menu, choose "More Tools" and select "Extensions".

removing malicious Google Chrome extensions step 2

In the "Extensions" window, look for any recently-installed suspicious add-ons. When located, click the "Trash" button next to it/them. Note that you can safely uninstall all extensions from your Google Chrome browser - none are crucial for normal browser operation.

  • If you continue to have problems with browser redirects and unwanted advertisements - Reset Google Chrome.

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About the author:

Tomas Meskauskas

Tomas Meskauskas - expert security researcher, professional malware analyst.

I am passionate about computer security and technology. I have an experience of over 10 years working in various companies related to computer technical issue solving and Internet security. I have been working as an author and editor for pcrisk.com since 2010. Follow me on Twitter and LinkedIn to stay informed about the latest online security threats. Contact Tomas Meskauskas.

PCrisk security portal is brought by a company RCS LT. Joined forces of security researchers help educate computer users about the latest online security threats. More information about the company RCS LT.

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Malware activity

Global malware activity level today:

Medium threat activity

Increased attack rate of infections detected within the last 24 hours.

QR Code
Mac Security fake antivirus QR code
A QR code (Quick Response Code) is a machine-readable code which stores URLs and other information. This code can be read using a camera on a smartphone or a tablet. Scan this QR code to have an easy access removal guide of Mac Security fake antivirus on your mobile device.
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