Check And Switch Adware
Written by Tomas Meskauskas on (updated)
What is Check and Switch?
Check and Switch is a deceptive application that supposedly helps to fix grammatical errors in text. This functionality may seem legitimate and useful, however, Check and Switch often infiltrates systems without permission.
In addition, it delivers intrusive advertisements, gathers sensitive information, and reduces system performance. For these reasons, Check and Switch is categorized as a potentially unwanted program (PUP).
The presence of Check and Switch adware affects system performance considerably. At time of testing, this app consumed over 50% of CPU resources. Although there are a number of causes, PUPs are likely to be mining various cryptocurrencies on the system.
The mining process can take up to 100% of CPU resources, making the system unstable (it might freeze, leading to permanent data loss). Furthermore, components that run at maximum capacity generate excessive heat. Therefore, in certain circumstances (bad cooling systems, high room temperatures, etc.), computer components may over heat.
Thus, the presence of cryptomining PUPs can lead to significant financial/data losses. Furthermore, some anti-virus/anti-spyware suites detect Check and Switch as a "trojan downloader". Therefore, this PUP might be capable of infiltrating other viruses into the system.
As mentioned above, Check and Switch is also used to deliver intrusive advertisements. These are displayed using tools that enable placement of third party graphical content on any site. Most conceal underlying content, significantly diminishing the web browsing experience.
Furthermore, these ads redirect to infectious websites and execute scripts that stealthily download/install malware. Therefore, clicking them risks various system infections. Check and Switch also gathers information relating to web browsing habits.
The information typically includes personal details that developers sell to third parties (potentially, cyber criminals) who misuse it to generate revenue. Therefore, having a data-tracking app such as Check and Switch installed on your computer might lead to serious privacy issues or even identity theft.
|Name||Check and Switch potentially unwanted program|
|Threat Type||Adware, Unwanted ads, Pop-up Virus|
|Symptoms||Seeing advertisements not originating from the sites you are browsing. Intrusive pop-up ads. Decreased Internet browsing speed.|
|Distribution methods||Deceptive pop-up ads, free software installers (bundling), fake flash player installers.|
|Damage||Decreased computer performance, browser tracking - privacy issues, possible additional malware infections.|
|Malware Removal (Windows)||
To eliminate possible malware infections, scan your computer with legitimate antivirus software. Our security researchers recommend using Combo Cleaner.
Check and Switch is virtually identical to GeoSmartDNS, SuperSearch, FastDataX, and dozens of other adware-type applications. All offer "useful features", and yet these programs are designed only to generate revenue for the developers.
Adware gives no real value for regular users, delivers intrusive ads, and gathers sensitive information, thereby posing a direct threat to your privacy and Internet browsing safety. Claims to enable "useful functions" are merely attempts to give the impression of legitimacy.
How did Check and Switch install on my computer?
Users can download Check and Switch on its official website, however, this app is also distributed using intrusive advertising and "bundling" methods. Therefore, it often infiltrates without consent. "Bundling" is essentially stealth installation of third party applications together with regular programs.
"Bundled" apps are hidden within various sections (usually "Advanced" or "Custom" settings) of the download/installation processes.
Furthermore, many users rush these procedures and skip steps. In addition, they often click advertisements without understanding the possible consequences. This behavior often leads to inadvertent installation of PUPs - users expose their systems to risk of various infections and compromise their privacy.
How to avoid installation of potentially unwanted applications?
To prevent system infiltration by PUPs, be very cautious when browsing the Internet and downloading/installing software. Intrusive ads typically seem legitimate, but most redirect to dubious websites (gambling, pornography, survey, etc.) If you encounter these redirects, check the list of installed applications and browser plug-ins.
Furthermore, analyze each window of the download/installation dialogs and opt-out of all additionally-included programs. In addition, never use any third party download/installation tools, since they are likely to "bundle" PUPs. Software should be downloaded from official sources only, using direct download links.
The key to computer safety is caution. If your computer is already infected with Check and Switch, we recommend running a scan with Combo Cleaner Antivirus for Windows to automatically eliminate this adware.
Check and Switch adware process in Windows Task Manager:
Deceptive installer distributing Check and Switch adware:
Instant automatic 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 malware. Download it by clicking the button below:
- What is Check and Switch?
- STEP 1. Uninstall Check and Switch application using Control Panel.
- STEP 2. Remove Check and Switch adware from Internet Explorer.
- STEP 3. Remove Check and Switch ads from Google Chrome.
- STEP 4. Remove 'Ads by Check and Switch' from Mozilla Firefox.
- STEP 5. Remove Check and Switch extension from Safari.
- STEP 6. Remove rogue plug-ins from Microsoft Edge.
Check and Switch adware removal:
Windows 11 users:
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:
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:
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:
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.
In the uninstall programs window, look for "Check and Switch", select this entry and click "Uninstall" or "Remove".
After uninstalling the potentially unwanted program that causes Check and Switch ads, scan your computer for any remaining unwanted components or possible malware infections. To scan your computer, use recommended malware removal software.
Remove Check and Switch adware from Internet browsers:
At time of research, Check and Switch did not install its browser plug-ins on Internet Explorer, Google Chrome, or Mozilla Firefox, however, it was bundled with other adware. Therefore, you are advised to remove all potentially unwanted browser add-ons from your Internet browsers.
Video showing how to remove potentially unwanted browser add-ons:
Remove malicious add-ons from Internet Explorer:
Click the "gear" 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".
If you continue to have problems with removal of the check and switch potentially unwanted program, 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.
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.
Windows 8 users: Open Internet Explorer and click the gear icon. Select Internet Options.
In the opened window, select the Advanced tab.
Click the Reset button.
Confirm that you wish to reset Internet Explorer settings to default by clicking the Reset button.
Remove malicious extensions from Google Chrome:
Click the Chrome menu icon (at the top right corner of Google Chrome), select "More tools" and click "Extensions". Locate all recently-installed suspicious browser add-ons and remove them.
If you continue to have problems with removal of the check and switch potentially unwanted program, reset your Google Chrome browser settings. Click the 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.
After scrolling to the bottom of the screen, click the Reset (Restore settings to their original defaults) button.
In the opened window, confirm that you wish to reset Google Chrome settings to default by clicking the Reset button.
Remove malicious plug-ins from Mozilla Firefox:
Click the Firefox menu (at the top right corner of the main window), select "Add-ons". Click on "Extensions", in the opened window, remove all recently-installed suspicious browser plug-ins.
Computer users who have problems with check and switch potentially unwanted program removal can reset their Mozilla Firefox settings.
Open Mozilla Firefox, at the top right corner of the main window, click the Firefox menu, in the opened menu, click Help.
Select Troubleshooting Information.
In the opened window, click the Refresh Firefox button.
In the opened window, confirm that you wish to reset Mozilla Firefox settings to default by clicking the Refresh Firefox button.
Remove malicious extensions from Safari:
Make sure your Safari browser is active, click Safari menu, and select Preferences....
In the opened window click Extensions, locate any recently installed suspicious extension, select it and click Uninstall.
Make sure your Safari browser is active and click on Safari menu. From the drop down menu select Clear History and Website Data...
In the opened window select all history and click the Clear History button.
Remove malicious extensions from Microsoft Edge:
Click the Edge 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.
If you continue to have problems with removal of the check and switch potentially unwanted program, reset your Microsoft Edge browser settings. Click the Edge menu icon (at the top right corner of Microsoft Edge) and select Settings.
In the opened settings menu select Reset settings.
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.
- If this did not help, follow these alternative instructions explaining how to reset the Microsoft Edge browser.
Commonly, 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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