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System Notification! Scam

Also Known As: "System notification!" virus
Type: Adware
Damage level: Medium

What is System notification!?

"System notification!" is a fake error message displayed by a malicious website. Users often visit this site inadvertently - they are redirected by various potentially unwanted programs (PUPs). Research shows that PUPs infiltrate systems without users' consent ("bundling" method).

In addition, they deliver unwanted advertisements and continually record information relating to users' Internet browsing activity.

System notification! adware

According to "System notification!", suspicious activity has been detected on the computer. It is also stated that if the error pop-up is closed, computer access is disabled. To resolve this problem, users are encouraged to contact technical support via the telephone number ("+44-800-090-3858") provided. They are then supposedly guided through the fixing process.

Be aware, however, that "System notification!" is a scam. Cyber criminals attempt to trick victims into calling and paying for technical services that are not required. We strongly advise you to ignore this error message and close it immediately. As mentioned above, PUPs generate various intrusive advertisements.

To achieve this, developers employ a "virtual layer" - a tool that enables placement of third party graphical content on any site. Therefore, displayed ads often conceal underlying content, thereby significantly diminishing the web browsing experience. Furthermore, some lead to malicious websites and even accidental clicks can result in high-risk adware or malware infections.

Another downside is information tracking. PUPs gather IP addresses, URLs visited, pages viewed, search queries, mouse/keyboard activity, etc. The collected data might contain personal details that developers share with third parties (potentially, cyber criminals) who misuse private details to generate revenue.

Thus, the presence of information-tracking apps can result in serious privacy issues or even identity theft. All potentially unwanted programs must be uninstalled immediately.

"System notification!" is virtually identical to Invalid Partition Type Was Detected, System Has Detected Intrusion, Microsoft Warning Alert, and dozens of other fake errors. 

All state that the system is infected or damaged in certain ways, however, as with "System notification!", these error messages are designed only to generate revenue for the developers and should never be trusted. Potentially unwanted programs also have an identical purpose.

By offering various 'useful features', they attempt to give the impression of legitimacy - in fact, their only purpose is to generate revenue for the developers, whilst regular users receive no value. Rather than providing any of the functionality promised, PUPs cause unwanted redirects, collect personal information, and deliver various intrusive online advertisements.

How did adware install on my computer?

Developers proliferate PUPs by employing a deceptive marketing method called "bundling" - stealth installation of third party applications with regular software/apps. Developers hide bundled programs within the "Custom" or "Advanced" settings of the download/installation processes.

Rushing these processes and skipping steps exposes systems to risk of various infections and compromises users' privacy.

How to avoid installation of potentially unwanted applications?

To prevent system infiltration by PUPs, be very cautious during the download/installation processes. Closely analyze each step using the "Custom" or "Advanced" settings. Furthermore, decline offers to download/install additional applications.

Text presented within "System notification!" error:

The problem is caused by an unusual activity performed on this machine. Error code - S47452D Do not ignore this critical alert.
We are here to help! Call customer support number +44-800-090-3858 and share this code with the agent.
If you close this page, your computer access will be disabled to prevent further damage to our network.
Your computer has alerted us that it has been infected with a virus and spyware. The following information is being stolen.

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Quick menu:

Adware removal:

Windows 11 users:

Accessing Apps and Features in Windows 11

Right-click on the Start icon, select Apps and Features. In the opened window search for the application you want to uninstall, after locating it, click on the three vertical dots and select Uninstall.

Windows 10 users:

Accessing Programs and Features (uninstall) in Windows 8

Right-click in the lower left corner of the screen, in the Quick Access Menu select Control Panel. In the opened window choose Programs and Features.

Windows 7 users:

Accessing Programs and Features (uninstall) in Windows 7

Click Start (Windows Logo at the bottom left corner of your desktop), choose Control Panel. Locate Programs and click Uninstall a program.

macOS (OSX) users:

Uninstall app in OSX (Mac)

Click Finder, in the opened screen select Applications. Drag the app from the Applications folder to the Trash (located in your Dock), then right click the Trash icon and select Empty Trash.

System notification! adware uninstall via Control Panel

In the uninstall programs window, look for any suspicious/recently-installed applications, select these entries and click "Uninstall" or "Remove".

After uninstalling the potentially unwanted program, scan your computer for any remaining unwanted components or possible malware infections. To scan your computer, use recommended malware removal software.

Remove adware from Internet browsers:

Video showing how to remove potentially unwanted browser add-ons:

Internet Explorer logoRemove malicious add-ons from Internet Explorer:

Removing System notification! ads from Internet Explorer step 1

Click the "gear" icon Internet Explorer options icon (at the top right corner of Internet Explorer), select "Manage Add-ons". Look for any recently-installed suspicious browser extensions, select these entries and click "Remove".

Removing System notification! ads from Internet Explorer step 2

Optional method:

If you continue to have problems with removal of the "system notification!" virus, reset your Internet Explorer settings to default.

Windows XP users: Click Start, click Run, in the opened window type inetcpl.cpl In the opened window click the Advanced tab, then click Reset.

Resetting Internet Explorer settings to default on Windows XP

Windows Vista and Windows 7 users: Click the Windows logo, in the start search box type inetcpl.cpl and click enter. In the opened window click the Advanced tab, then click Reset.

Resetting Internet Explorer settings to default on Windows 7

Windows 8 users: Open Internet Explorer and click the gear icon. Select Internet Options.

Reseting Internet Explorer settings to default in Windows 8 - accessing

In the opened window, select the Advanced tab.

Resetting Internet Explorer settings to default on Windows 8 - Internet options advanced tab

Click the Reset button.

Resetting Internet Explorer settings to default on Windows 8 - click the Reset button in the Internet options advanced tab

Confirm that you wish to reset Internet Explorer settings to default by clicking the Reset button.

Resetting Internet Explorer settings to default on Windows 8 - confirm settings reset to default by clicking the reset button

Google Chrome logoRemove malicious extensions from Google Chrome:

Removing System notification!  ads from Google Chrome step 1

Click the Chrome menu icon Google Chrome options icon (at the top right corner of Google Chrome), select "Tools" and click "Extensions". Locate all recently-installed suspicious browser add-ons, select these entries and click the trash can icon.

Removing System notification! ads from Google Chrome step 2

Optional method:

If you continue to have problems with removal of the "system notification!" virus, reset your Google Chrome browser settings. Click the Chrome menu icon Google Chrome menu icon (at the top right corner of Google Chrome) and select Settings. Scroll down to the bottom of the screen. Click the Advanced… link.

Google Chrome settings reset step 1

After scrolling to the bottom of the screen, click the Reset (Restore settings to their original defaults) button.

Google Chrome settings reset step 2

In the opened window, confirm that you wish to reset Google Chrome settings to default by clicking the Reset button.

Google Chrome settings reset step 3

Mozilla Firefox logoRemove malicious plug-ins from Mozilla Firefox:

Removing System notification! ads from Mozilla Firefox step 1

Click the Firefox menu firefox menu icon (at the top right corner of the main window), select "Add-ons". Click "Extensions", in the opened window, remove all recently-installed suspicious browser plug-ins.

Removing System notification! ads from Mozilla Firefox step 2

Optional method:

Computer users who have problems with "system notification!" virus removal can reset their Mozilla Firefox settings.

Open Mozilla Firefox, at the top right corner of the main window, click the Firefox menu, firefox menu icon in the opened menu, click Help.

Accessing settings (Reset Firefox to default settings step 1)

Select Troubleshooting Information.

Accessing Troubleshooting Information (Reset Firefox to default settings step 2)

In the opened window, click the Refresh Firefox button.

Clicking on Refresh Firefox button (Reset Firefox to default settings step 3)

In the opened window, confirm that you wish to reset Mozilla Firefox settings to default by clicking the Refresh Firefox button.

Confirm your want to reset Firefox settings to default (Reset Firefox to default settings step 4)

safari browser logoRemove malicious extensions from Safari:

removing adware from safari step 1 - accessing preferences

Make sure your Safari browser is active, click Safari menu, and select Preferences....

removing adware from safari step 2 - removing extensions

In the opened window click Extensions, locate any recently installed suspicious extension, select it and click Uninstall.

Optional method:

Make sure your Safari browser is active and click on Safari menu. From the drop down menu select Clear History and Website Data...

resetting safari step 1

In the opened window select all history and click the Clear History button.

resetting safari step 2

Microsoft Edge (Chromium) logoRemove malicious extensions from Microsoft Edge:

Removing adware from Microsoft Edge step 1

Click the Edge menu icon Microsoft Edge (chromium) menu icon (at the upper-right corner of Microsoft Edge), select "Extensions". Locate all recently-installed suspicious browser add-ons and click "Remove" below their names.

Removing adware from Microsoft Edge step 2

Optional method:

If you continue to have problems with removal of the "system notification!" virus, reset your Microsoft Edge browser settings. Click the Edge menu icon Microsoft Edge (chromium) menu icon (at the top right corner of Microsoft Edge) and select Settings.

Microsoft Edge (Chromium) reset step 1

In the opened settings menu select Reset settings.

Microsoft Edge (Chromium) reset step 2

Select Restore settings to their default values. In the opened window, confirm that you wish to reset Microsoft Edge settings to default by clicking the Reset button.

Microsoft Edge (Chromium) reset step 3

  • If this did not help, follow these alternative instructions explaining how to reset the Microsoft Edge browser.

Summary:

declining installation of adware while downloading free software sampleCommonly, adware or potentially unwanted applications infiltrate Internet browsers through free software downloads. Note that the safest source for downloading free software is via developers' websites only. To avoid installation of adware, be very attentive when downloading and installing free software. When installing previously-downloaded free programs, choose the custom or advanced installation options – this step will reveal any potentially unwanted applications listed for installation together with your chosen free program.

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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.

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Software uninstall instructions
Malware activity

Global malware activity level today:

Medium threat activity

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

QR Code
System notification! virus QR code
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