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How to remove redirects to mainsourceofupdate[.]best from Mac computers
What is mainsourceofupdate[.]best?
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mainsourceofupdate[.]best is a deceptive/scam web page, which claims that the visitor's Adobe Flash Player is outdated. It also endorses a fake Flash updater. These rogue updaters are used to proliferate a wide variety of untrustworthy and malicious content. Few users access mainsourceofupdate[.]best intentionally, since most are redirected to this site by intrusive advertisements or Potentially Unwanted Applications (PUAs) already infiltrated into the system.
Visitors to mainsourceofupdate[.]best first see a pop-up window informing them that the Adobe Flash Player supposedly needs to be updated. After this pop-up is closed, the site displays another web page, which informs users that Adobe Flash Player is an essential browser plug-in. Flash Player enables users to view content ranging from videos to animation, and is also necessary to play high-quality audio and certain online games. It states that, since this plug-in missing the latest security updates (i.e., the software is outdated), it has been blocked and is no longer operational. To continue using Adobe Flash Player, mainsourceofupdate[.]best recommends updating it. This web page has a pop-up window in the bottom right corner. The text presented within this window urges users to continue watching (it does not specify what), since Flash Player requires the latest updates. The page then shows yet another pop-up, which repeats the general message. If users are tricked by mainsourceofupdate[.]best, they will download/install a fake updater used to proliferate unwanted and malicious content (e.g. fake Mac cleaners/optimizers, browser hijackers, adware, trojans and so on).
As well as generating redirects to deceptive/scam, untrustworthy and malicious web pages, PUAs have other dangerous capabilities. PUAs often seem legitimate and tempt users to install with offers of 'useful' features, which are usually nonoperational. Unwanted apps such as fake system cleaners/optimizers often require activation to perform their advertised functions, however, despite being activated (i.e., purchases made), they remain nonfunctional. Adware-type applications run intrusive advertisement campaigns, diminishing the browsing experience and delivering harmful ads. Browser hijackers make unauthorized changes to browsers and limit/deny access to their settings. PUAs commonly have data tracking capabilities. They record users' browsing activity (browsing and search engine histories) and gather personal information (IP addresses, geolocations and other details). This private data can then shared with third parties (potentially, cyber criminals) intent on misusing it for profit. To summarize, PUAs can cause browser/system infiltration and infections, and lead to financial loss, serious privacy issues and even identity theft. To ensure device integrity and user safety, remove all suspicious applications and browser extensions/plug-ins immediately upon detection.
Name | mainsourceofupdate.best pop-up |
Threat Type | Phishing, Scam, Mac malware, Mac virus. |
Fake Claim | Site claims that visitors' Adobe Flash Player is outdated. |
Detection Names (fake updater) | Avast (Other:Malware-gen [Trj]), BitDefender (Adware.MAC.Bundlore.DPS), ClamAV (Osx.Trojan.SHLayer-6992220-1), Kaspersky (HEUR:Trojan-Downloader.OSX.Shlayer.a), Full List (VirusTotal) |
Serving IP Address (mainsourceofupdate.best) | 212.83.128.68 |
Promoted Unwanted Application | This website promotes fake Flash Player updaters. |
Symptoms | Your Mac becomes slower than normal, you see unwanted pop-up ads, you are redirected to dubious websites. |
Distribution methods | Deceptive pop-up ads, free software installers (bundling), fake Flash Player installers, torrent file downloads. |
Damage | Internet browser tracking (potential privacy issues), display of unwanted ads, redirects to dubious websites, loss of private information. |
Malware Removal (Mac) | To eliminate possible malware infections, scan your Mac with legitimate antivirus software. Our security researchers recommend using Combo Cleaner. |
mainsiteofupdatenow[.]best, centersourceoffreeupgrade[.]best, and securedconection[.]com are some examples of other scam websites. They tend to use social engineering and scare tactics to trick users into performing specific actions. For example, deceptive pages can claim that a crucial piece of software is outdated and then suggest updates. They can also warn visitors that their devices are at risk/infected and offer applications for the removal of the nonexistent threats/issues. These are just some ways in which these sites encourage users into downloading/installing/purchasing untrustworthy or malicious content, revealing personal and/or banking information, and so on. You are strongly advised against trusting web pages that 'detect' any device threats or issues, make ludicrous offers, claim that visitors have won 'amazing' prizes, or similar.
How did potentially unwanted applications install on my computer?
Fake updaters can be the source of PUAs, however, these apps can also be installed together with other normal products. This deceptive marketing method of pre-packing regular software with unwanted or malicious content is called 'bundling'. Rushing download/installation processes (e.g. ignoring terms, skipping steps, using pre-set options, etc.) increases the risk of inadvertently allowing bundled content onto devices, thereby endangering them with potential infiltration and infections. Some PUAs have 'official' download pages. When clicked, intrusive advertisements can execute scripts designed to download/install PUAs without users' consent.
How to avoid installation of potentially unwanted applications
You are strongly advised to research all content, prior to downloading/installing. Use only official and verified download channels. Do not use untrustworthy sources such as Peer-to-Peer sharing networks (BitTorrent, eMule, Gnutella, etc.), unofficial and free file-hosting websites, third party downloaders and similar - these are far more likely to offer deceptive and/or bundled products. Software should be updated with tools/functions provided by legitimate developers. Third party updaters are high-risk and should be avoided. When downloading/installing, read the terms, explore all possible options, use the 'Custom/Advanced' settings and opt-out of additional apps, tools, features, etc. Intrusive ads usually seem normal and harmless, however, they redirect to dubious sites (e.g. gambling, pornography, adult-dating and others). If you encounter ads/redirects of this kind, check the system and immediately remove all dubious applications and/or browser extensions/plug-ins. If your computer is already infected with PUAs, we recommend running a scan with Combo Cleaner Antivirus for macOS to automatically eliminate them.
Appearance of mainsourceofupdate[.]best scam (GIF):
Text presented in the initial pop-up window:
Update to the latest version of Flash Player. Your current Adobe Flash Player version is out of date.
Screenshot of the second page displayed by mainsourceofupdate[.]best:
Text presented in the background of this page:
Latest version of Flash Player is required to encode and/or decode (Play) audio files in high quality. - Click here to update for latest version.
Software update
Adobe Flash Player
Install the latest update
Update now
'Adobe Flash Player' is an essential plugin for your browser that allows you to view everything from video to games and animation on the web. The version of “Adobe Flash Player' on your system does not include the latest security updates and has been blocked.
To continue using “Adobe Flash Player', download an updated version.
Update Download Flash...
Text presented in the pop-up displayed on this page:
Flash Player Update REQUIRED
Install latest version of Adobe Flash Player in order to continue watching.
Download
Screenshot of another pop-up displayed by mainsourceofupdate[.]best:
Text presented in this pop-up:
“Adobe Flash Player” is out-of-date
The version of this plug-in on your computer doesn't include the latest security updates. Flash cannot be used until you download an update from Adobe.Update Download Flash...
Screenshot of the fake Adobe Flash Player installer promoted via this scam website:
Instant automatic Mac 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 Mac malware. Download it by clicking the button below:
▼ DOWNLOAD Combo Cleaner for MacBy downloading any software listed on this website you agree to our Privacy Policy and Terms of Use. To use full-featured product, you have to purchase a license for Combo Cleaner. Limited three days free trial available.
Quick menu:
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- STEP 1. Remove PUA related files and folders from OSX.
- STEP 2. Remove rogue extensions from Safari.
- STEP 3. Remove rogue add-ons from Google Chrome.
- STEP 4. Remove potentially unwanted plug-ins from Mozilla Firefox.
Video showing how to remove unwanted apps promoted via mainsourceofupdate[.]best scam website using Combo Cleaner:
Potentially unwanted applications removal:
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Remove potentially unwanted applications from your 'Applications' folder:
Click the Finder icon. In the Finder window, select 'Applications'. In the applications folder, look for 'MPlayerX','NicePlayer', or other suspicious applications and drag them to the Trash. After removing the potentially unwanted application(s) that cause online ads, scan your Mac for any remaining unwanted components.
Combo Cleaner checks if your computer is infected with malware. To use full-featured product, you have to purchase a license for Combo Cleaner. Limited three days free trial available.
Remove mainsourceofupdate.best pop-up related files and folders:
Click the Finder icon, from the menu bar. Choose Go, and click Go to Folder...
Check for adware-generated files in the /Library/LaunchAgents folder:
In the Go to Folder... bar, type: /Library/LaunchAgents
In the “LaunchAgents” folder, look for any recently-added suspicious files and move them to the Trash. Examples of files generated by adware - “installmac.AppRemoval.plist”, “myppes.download.plist”, “mykotlerino.ltvbit.plist”, “kuklorest.update.plist”, etc. Adware commonly installs several files with the same string.
Check for adware generated files in the /Library/Application Support folder:
In the Go to Folder... bar, type: /Library/Application Support
In the “Application Support” folder, look for any recently-added suspicious folders. For example, “MplayerX” or “NicePlayer”, and move these folders to the Trash.
Check for adware-generated files in the ~/Library/LaunchAgents folder:
In the Go to Folder bar, type: ~/Library/LaunchAgents
In the “LaunchAgents” folder, look for any recently-added suspicious files and move them to the Trash. Examples of files generated by adware - “installmac.AppRemoval.plist”, “myppes.download.plist”, “mykotlerino.ltvbit.plist”, “kuklorest.update.plist”, etc. Adware commonly installs several files with the same string.
Check for adware-generated files in the /Library/LaunchDaemons folder:
In the Go to Folder... bar, type: /Library/LaunchDaemons
In the “LaunchDaemons” folder, look for recently-added suspicious files. For example “com.aoudad.net-preferences.plist”, “com.myppes.net-preferences.plist”, 'com.kuklorest.net-preferences.plist”, “com.avickUpd.plist”, etc., and move them to the Trash.
Scan your Mac with Combo Cleaner:
If you have followed all the steps in the correct order you Mac should be clean of infections. To be sure your system is not infected run a scan with Combo Cleaner Antivirus. Download it HERE. After downloading the file double click combocleaner.dmg installer, in the opened window drag and drop Combo Cleaner icon on top of the Applications icon. Now open your launchpad and click on the Combo Cleaner icon. Wait until Combo Cleaner updates it's virus definition database and click 'Start Combo Scan' button.
Combo Cleaner will scan your Mac for malware infections. If the antivirus scan displays 'no threats found' - this means that you can continue with the removal guide, otherwise it's recommended to remove any found infections before continuing.
After removing files and folders generated by the adware, continue to remove rogue extensions from your Internet browsers.
mainsourceofupdate.best pop-up removal from Internet browsers:
Remove malicious extensions from Safari:
Remove mainsourceofupdate.best pop-up related Safari extensions:
Open Safari browser, from the menu bar, select 'Safari' and click 'Preferences...'.
In the preferences window, select 'Extensions' and look for any recently-installed suspicious extensions. When located, click the 'Uninstall' button next to it/them. Note that you can safely uninstall all extensions from your Safari browser - none are crucial for normal browser operation.
- If you continue to have problems with browser redirects and unwanted advertisements - Reset Safari.
Remove malicious plug-ins from Mozilla Firefox:
Remove mainsourceofupdate.best pop-up related Mozilla Firefox add-ons:
Open your Mozilla Firefox browser. At the top right corner of the screen, click the 'Open Menu' (three horizontal lines) button. From the opened menu, choose 'Add-ons'.
Choose the 'Extensions' tab and look for any recently-installed suspicious add-ons. When located, click the 'Remove' button next to it/them. Note that you can safely uninstall all extensions from your Mozilla Firefox browser - none are crucial for normal browser operation.
- If you continue to have problems with browser redirects and unwanted advertisements - Reset Mozilla Firefox.
Remove malicious extensions from Google Chrome:
Remove mainsourceofupdate.best pop-up related Google Chrome add-ons:
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Open Google Chrome and click the 'Chrome menu' (three horizontal lines) button located in the top-right corner of the browser window. From the drop-down menu, choose 'More Tools' and select 'Extensions'.
In the 'Extensions' window, look for any recently-installed suspicious add-ons. When located, click the 'Trash' button next to it/them. Note that you can safely uninstall all extensions from your Google Chrome browser - none are crucial for normal browser operation.
- If you continue to have problems with browser redirects and unwanted advertisements - Reset Google Chrome.
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