Protect the browser and internet settings from unwanted software
When you download torrent clients, add-ons, and other programs from suspicious sites that distribute pirated content, unwanted programs may be installed on your computer without your knowledge. They aren't viruses, but they can make your browser slower, install additional toolbars without your consent, and redirect you to fraudulent, phishing, or ad pages.
Dangers of unwanted software
- Run Notepad as an administrator (to do this, right-click the program shortcut and select Run as administrator).
- Open the C:\WINDOWS\system32\drivers\etc\hosts file in Notepad.
- Delete all lines except 127.0.0.1 localhost from the file and save the changes.
- Click the menu button in the browser and select the extensions menu item (depending on the browser, it may be called Additions, Additional tools, Extensions, or Add-ons).
- Remove strange extensions.
Right-click the shortcut and select Properties.
Make sure that the Target line only contains the path to the browser's executable file.Example:
If the Target line includes a path to an unknown file after a space, delete it and click OK.Example:
C:\Program Files\Google\Chrome\Application\chrome.exe load-and-launch-app=C:\Users\user\AppData\Local\Google\Chrome\UserData\Default\def_apps\ipcleopmlacobpjligchhkpongdjlfjh\35.0_0
The unwanted program is a filter driver that intercepts internet traffic to display intrusive and shocking ads in the browser, open ad tabs, redirect you to unwanted sites, and steal your personal data.
The unwanted program changes the DNS settings.
Unwanted software changes the DNS server address in the system settings. As a result, all requests are sent to another server, which redirects the user to fraudulent, phishing, or ad pages.
Malware can add wrong addresses to the hosts file, blocking access to popular sites, redirecting you to phishing pages, or disabling browser security features.
If you use Windows, here's what you can do to cure your device:
The program secretly installs malicious extensions that open ad tabs in the browser, show intrusive and shocking ads, or steal your personal data.
Antiviruses are bad at recognizing malicious extensions. This is because all extensions work inside the browser and don't affect the computer's operating system.
To check extensions that are installed in browsers:
The unwanted program changes the browser launch shortcut, adding new parameters (most often, a site address) or launching another app instead of the browser. As a result, ad pages open at every launch.
To check the shortcut properties:
How to remove unwanted software
Check the system with the Yandex Rescue Tool antivirus utility.
- Install the utility
- Note. If you use Yandex Browser, you don't need to download and install the utility. If a threat is detected, a “Malware detected” warning appears in the browser window. To launch the utility, click Start scan and cleanup.
- Start cleanup
- In the System cleanup utility, click Start scan.
- Allow the utility to make changes to the device.
- If unwanted software is detected, the system offers to remove them. To view the list of detected programs, click the Scan report link.
- To complete the cleanup, go to the Potentially unwanted applications found window and click Remove. To remove some programs completely, you may need to restart the computer.
If unwanted software wasn't found or some malicious programs weren't removed, run the cleanup again.
If you repeated the cleanup and no unwanted programs were detected or removed but you're sure that the computer is at risk, try using free antiviruses or contact support.