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Remove Macos-online-security-check.com (Removal Instructions) - Free Guide

removal by Julie Splinters - - | Type: Adware

Macos-online-security-check.com is a scam message that targets MacOS with fake error messages and virus alerts

Macos-online-security-check.comMacos-online-security-check.com is the program that makes your browser running slow due to consistently delivered ads and redirects. This is a deceptive program, in other words, a scam based on phishing messages and scareware functions.[1] The primary purpose of such scams include delivering promotional content and tricking users into purchasing or installing useless software. Since this is a program affecting Mac devices, it promotes tools like Mac Cleanup Pro or Advanced Mac Cleaner. Fake malware alerts are designed to trick users into installing these tools with claims that software can remove all the detected threats. However, once downloaded software claims that you need a licensed version of the program to get rid of the intruders. This behavior creates a circle of the installations of rogue software that affects the speed and performance of your machine even more.

Name Macos-online-security-check.com
Type Scam[2]
Category Adware/ Potentially unwanted program
Symptoms Mac becomes slow, crashing and freezing, intrusive pop-ups and redirects appear on the screen continuously
Distribution Software bundles, deceptive websites, advertisements
Main danger Scares people into purchasing questionable tools and programs, tracks and collects information about the users' habits online
Elimination Scan the machine fully with a professional anti-malware program and remove Macos-online-security-check.com

The initial visit on the redirect to Macos-online-security-check.com delivers pop-up system alert that poses as the legitimate message form AppleCare. The message can even cause noise on the computer to fake legitimacy.

However, IMMEDIATE ACTION REQUIRED alert is not a serious message and there is no malware on the machine despite the malware list or the error message. Scanning the system as the redirect suggests only delivers you the pre-determined results of malware and cyber threats. You need to get a reputable anti-malware tool to see if the system is infected.

Macos-online-security-check.com scam may deliver different messages and alerts, but the initial message reads the following:

IMMEDIATE ACTION REQUIRED
We have detected a trojan virus (e.tre456_worm_osx) on your Mac.
Press OK to begin the repair process.

When your screen and the browser gets locked and you select the Scan Now button, Macos-online-security-check.com pretends to check the machine and indicates that the scan is running on your system. Then another message presents pre-determined scan results with malware names, trojans or other cyber threats.

Fake Macos-online-security-check.com scan results are followed by the offer to Remove Viruses Now with the provided tool. The message displayed on the screen states that your device might get damaged and you need to download the virus removal program.

Macos-online-security-check.com scam
Macos-online-security-check.com is the phishing scam that makes your device running slow and displays various commercial content besides the scareware-type alerts.

Since various versions of Macos-online-security-check.com delivers different tools it may differ from victim to victim, but the alleged scan results show up like this:

DOWNLOAD REQUIRED
Your Mac is heavily damaged! (33.2%) 
Please download the Advanced Mac Cleaner application to remove 3 Viruses from your Mac.
VIRUS INFORMATION
Virus Name: Tapsnake; CronDNS; Dubfishicv
Risk: HIGH
Infected Files: /os/apps/hidden/os-component/X/snake.icv; /os/local/conf/keyboard/retype.icv…
REMOVE VIRUSES NOW
VIRUS REMOVAL
Application: Mac Speedup Pro
Rating: 9.9/10
Price: Free

You need to remove Macos-online-security-check.com instead of relying on the suggested tool because the adware that causes these messages is the threat you need to get rid of. The list is created to scare and make you believe that there is a considerable risk of getting malware infections, but the reported damage is not real.

Macos-online-security-check.com can install and download additional tools or applications on your browser or the system in general, so you need to scan the computer thoroughly to see all the intruders and delete them from the machine with a proper tool. Anti-malware programs are the best for this purpose because PUPs and more severe malware can get detected during a system check.

Macos-online-security-check.com removal shouldn't be a complicated process if you employ a reliable tool and pay close attention to results and the whole scanning process. When the program like Reimage scans the system, it detects intruders, corrupted files and malicious programs like PUPs or severe viruses and indicates them as dangerous. Then removal requires less than 10 minutes, and your machine is clear again.

Potentially unwanted programs come as extras during freeware installations

During downloads and installations of software, programs or updates it is crucial to choose the right option. Experts[3] always inform how Advanced options instead of Default installations can change the outcome of a whole process.

When the user goes the quick route and selects Default or Recommended installations all programs listed on the setup automatically comes to the system without any additional permission required. This activity is unnoticed until the PUP starts showing unwanted and intrusive behavior. 

You can avoid these unwanted downloads and installations. The only requirement is to choose a reputable source for your programs and updates or software because it is less likely to get additional applications from official providers. Also, opting for Advanced or Custom installations give you the opportunity of de-selecting programs you don't need or want. 

Avoid visiting deceptive sites filled with commercial or suspicious content, clicking on pop-up ads and banners or using p2p services, free-share networks. All of these can lead to unwanted PUP infiltrations and even more severe malware infections. 

Get a reputable tool and make your system clean again by removing Macos-online-security-check.com as soon as possible

You should note that this scam is caused by the adware-type intruder which came via third-party installers. This fact also means that Macos-online-security-check.com virus collects information about the user including IP addresses, locations, and online browsing habits. 

Macos-online-security-check.com removal process should be performed as soon as possible because the potentially unwanted program can access details about the device and the user once the system gets infiltrated. Those details get tracked and collected with the purpose of sharing with third-parties.

Later on, all collected data can be used in malvertising campaigns and target the user with more personalized advertisements, so remove Macos-online-security-check.com using professional anti-malware and forget about this intrusive behavior and data tracking risks.

You can remove virus damage automatically with a help of one of these programs: Reimage, SpyHunter 5Combo Cleaner, Malwarebytes. We recommend these applications because they detect potentially unwanted programs and viruses with all their files and registry entries that are related to them.

Offer
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Compatible with Microsoft Windows Supported versions Compatible with OS X Supported versions
What to do if failed?
If you failed to remove virus damage using Reimage, submit a question to our support team and provide as much details as possible.
Reimage is recommended to remove virus damage. Free scanner allows you to check whether your PC is infected or not. If you need to remove malware, you have to purchase the licensed version of Reimage malware removal tool.
Alternative Software
Different security software includes different virus database. If you didn’t succeed in finding malware with Reimage, try running alternative scan with SpyHunter 5.
Alternative Software
Different security software includes different virus database. If you didn’t succeed in finding malware with Reimage, try running alternative scan with Combo Cleaner.

To remove Macos-online-security-check.com, follow these steps:

Uninstall Macos-online-security-check.com from Mac OS X system

Clean your machine fully and delete Macos-online-security-check.com

  1. If you are using OS X, click Go button at the top left of the screen and select Applications. Cick 'Go' and select 'Applications'
  2. Wait until you see Applications folder and look for Macos-online-security-check.com or any other suspicious programs on it. Now right click on every of such entries and select Move to Trash. Click on every malicious entry and select 'Move to Trash'

Eliminate Macos-online-security-check.com from Mozilla Firefox (FF)

  1. Remove dangerous extensions
    Open Mozilla Firefox, click on the menu icon (top right corner) and select Add-ons Extensions. Click on menu icon and select 'Add-ons'
  2. Here, select Macos-online-security-check.com and other questionable plugins. Click Remove to delete these entries. Select 'Extensions' and look for malicious entries. Click 'Remove' to get rid of each of them
  3. Reset Mozilla Firefox
    Click on the Firefox menu on the top left and click on the question mark. Here, choose Troubleshooting Information. Click on menu icon and then on '?'. Select 'Troubleshooting Information'
  4. Now you will see Reset Firefox to its default state message with Reset Firefox button. Click this button for several times and complete Macos-online-security-check.com removal. Click on 'Reset Firefox' button for a couple of times

Remove Macos-online-security-check.com from Google Chrome

You should also check the browser for additional content that affects the speed of your MacOS

  1. Delete malicious plugins
    Open Google Chrome, click on the menu icon (top right corner) and select Tools Extensions. Click on menu icon. Select 'Tools' and 'Extensions'
  2. Here, select Macos-online-security-check.com and other malicious plugins and select trash icon to delete these entries. Look for malicious entries and delete each of them by clicking on the Trash bin icon
  3. Click on menu icon again and choose Settings Manage Search engines under the Search section. When in 'Settings', select 'Manage search engines...'
  4. When in Search Engines..., remove malicious search sites. You should leave only Google or your preferred domain name. Click 'X' to remove malicious URLs
  5. Reset Google Chrome
    Click on menu icon on the top right of your Google Chrome and select Settings.
  6. Scroll down to the end of the page and click on Reset browser settings. When in 'Settings', scroll down to 'Reset browser settings' button and click on it
  7. Click Reset to confirm this action and complete Macos-online-security-check.com removal. Click on 'Reset' button to complete your removal

Get rid of Macos-online-security-check.com from Safari

  1. Remove dangerous extensions
    Open Safari web browser and click on Safari in menu at the top left of the screen. Once you do this, select Preferences. Click on 'Safari' and select 'Preferences'
  2. Here, select Extensions and look for Macos-online-security-check.com or other suspicious entries. Click on the Uninstall button to get rid each of them. Go to 'Extensions' and uninstall malicious add-ons
  3. Reset Safari
    Open Safari browser and click on Safari in menu section at the top left of the screen. Here, select Reset Safari.... Click on 'Safari' and select 'Reset Safari...'
  4. Now you will see a detailed dialog window filled with reset options. All of those options are usually checked, but you can specify which of them you want to reset. Click the Reset button to complete Macos-online-security-check.com removal process. Select all options and click on 'Reset' button

About the author

Julie Splinters
Julie Splinters - Malware removal specialist

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