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How to uninstall Steam Sheriff adware?

Also Known As: Ads by Steam Sheriff
Type: Adware
Damage level: Medium

What is Steam Sheriff?

Steam Sheriff is advertised as an app designed to check URLs visited by a user to help prevent Steam phishing attacks.

However, it is known that this app generates advertisements - it functions as adware (advertising-supported software). Therefore, it is advisable not to download and install this app.

It is noteworthy that most users download and install apps like Steam Sheriff inadvertently. For this reason, they are called potentially unwanted applications (PUAs).

Steam Sheriff pop-up redirects

It is highly advisable not to click advertisements generated by apps like Steam Sheriff - those ads are likely to be used to promote download pages for other PUAs, various scam websites like "Google Membership Rewards", "Your System Detected Some Unusual Activity", and other unreliable pages.

Moreover, some of those ads can be designed to run certain scripts and cause unwanted downloads, installations. In one way or another, advertisements generated by potentially unwanted applications cannot be trusted.

Another reason not to trust apps like Steam Sheriff is that they can be designed to collect details like user's IP addresses, geolocations, entered search queries, addresses of visited websites, and so on. Many adware-type apps can read sensitive information like credit card details, passwords, and telephone numbers.

Therefore, adware may be used as a tool to gather data that could be used to steal identities, accounts, make fraudulent purchases, transactions, or for other purposes. It is worthwhile to mention that adware-type apps can be designed to change browser's settings as well.

In such cases, they change the address of a homepage, new tab, and default search engine to an address of a fake search engine and do not allow to undo these changes as long as they are installed. Fake search engines generate misleading results (promote shady websites) or show results generated by other (legitimate or questionable) search engines.

These are the main reasons to avoid installing Steam Sheriff and similar apps. If an app of this type is already installed on a browser or the operating system, then it should be removed as soon as possible and never installed again.

Threat Summary:
Name Ads by Steam Sheriff
Threat Type Push notifications ads, Unwanted ads, Pop-up ads
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, third-party installers, unofficial pages, Peer-to-Peer networks
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.
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To use full-featured product, you have to purchase a license for Combo Cleaner. 7 days free trial available. Combo Cleaner is owned and operated by Rcs Lt, the parent company of PCRisk.com read more.

More adware examples are Ytviewer, Easy 2 Convert 4 Me, and Pokemon Go Spoofer GPS iOS Android 2021. It is common that developers advertise their adware as useful to trick users into downloading and installing so they could generate revenue from displayed ads.

In other words, apps like Steam Sheriff are useful not to their users but to their developers. As mentioned in the introduction paragraph, it is uncommon for adware to be downloaded and installed on purpose.

How did adware install on my computer?

It is common for adware and other PUAs to be distributed via downloaders, installers for other programs. Those downloaders, installers have ticked checkboxes or "Custom", "Advanced", "Manual" (or other) settings that can be used to decline offers to download or install bundled apps.

Although, not all users check and change those settings. Users who leave default settings allow for included apps to be downloaded or installed alongside wanted programs.

Additionally, unwanted downloads or installations can be caused via deceptive advertisements by clicking advertisements designed to run scripts and download or even install unwanted apps. It is noteworthy that those ads appear mostly on untrustworthy pages.

How to avoid installation of potentially unwanted applications?

Third-party downloaders, installers, Peer-to-Peer networks (e.g., torrent clients, eMule), unofficial websites should not be used to download or install any programs (or files). It is recommended to use only official websites and direct links for that.

Downloaders and installers with "Advanced", "Custom", and other similar settings (or ticked checkboxes) should be analyzed before finishing downloads, installations. It is common that they are bundled with unwanted applications (contain unwanted offers).

Additionally, it is advisable to avoid clicking advertisements that appear on questionable websites. More often than not, those ads are used to promote other shady pages. In some cases, they can be designed to cause unwanted downloads, installations as well.

Unwanted, suspicious extensions, plug-ins, or add-ons installed on a web browser should be removed. The operating system should not have programs of this kind installed on it too.

If your computer is already infected with rogue applications, we recommend running a scan with Combo Cleaner Antivirus for Windows to automatically eliminate them.

Notification saying that Steam Sheriff can read and change data:

steam sheriff adware browser notification

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:
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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.

Steam Sheriff adware uninstall via Control Panel

In the uninstall programs window, look for any potentially unwanted applications, select these entries and click "Uninstall" or "Remove".

After uninstalling the potentially unwanted application that causes Steam Sheriff redirects, 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:

Google Chrome logoRemove malicious extensions from Google Chrome:

Removing Steam Sheriff  ads from Google Chrome step 1

Click the Chrome menu icon Google 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 (e.g., "Steam Sheriff") and remove them.

Removing Steam Sheriff ads from Google Chrome step 2

Optional method:

If you continue to have problems with removal of the ads by steam sheriff, 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 Steam Sheriff 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 Steam Sheriff ads from Mozilla Firefox step 2

Optional method:

Computer users who have problems with ads by steam sheriff 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 ads by steam sheriff, 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.

Internet Explorer logoRemove malicious add-ons from Internet Explorer:

Removing Steam Sheriff 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 Steam Sheriff ads from Internet Explorer step 2

Optional method:

If you continue to have problems with removal of the ads by steam sheriff, 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

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.

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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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
Ads by Steam Sheriff QR code
Scan this QR code to have an easy access removal guide of Ads by Steam Sheriff on your mobile device.
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