Do not download files from mainsiteofupdatenow.best

What is mainsiteofupdatenow[.]best?

mainsiteofupdatenow[.]best is a deceptive website used to distribute a fake Flash Player updater. It attempts to trick people into downloading and installing unwanted software through the setup of a fake updater.

Typically, people do not often visit websites such as mainsiteofupdatenow[.]best intentionally - they are redirected to them by potentially unwanted applications (PUAs) that are already installed on their browsers and/or operating systems.

We strongly recommend against download anything from websites such as mainsiteofupdatenow[.]best - you should also remove all PUAs that could be responsible for opening them.

When visited, mainsiteofupdatenow[.]best displays two pop-ups: one encourages visitors to install the latest version of Adobe Flash Player to continue watching a video; another states that the installed version of Adobe Flash Player does not include the latest security updates.

Both lead to another pop-up window, which offers to update the operating system and Adobe Flash Player. Do not download anything from mainsiteofupdatenow[.]best and more importantly, do not open any downloaded files. Typically, fake Adobe Flash Player updaters and installers are used to distribute unwanted software such as adware or even malware.

Adware serves unwanted ads. For example, coupons, banners, surveys, pop-ups, and so on. If clicked, these lead to untrustworthy web pages (including mainsiteofupdatenow[.]best) or download and/or install unwanted software. This fake Adobe Flash Player might also be used to distribute malware.

The malware could be designed to steal sensitive information such as various credentials (including passwords), record keystrokes, proliferate other malware, and so on. In any case, it is likely that computers infected with such malware could lead to monetary and/or data loss, problems with privacy, browsing safety, and so on.

Note that fake Adobe Flash Player updaters and unofficial download web pages such as mainsiteofupdatenow[.]best can never be trusted.

Threat Summary:

Name	mainsiteofupdatenow.best scam website
Threat Type	Phishing, Scam, Mac malware, Mac virus.
Fake Claim	According to this web page, the visitor's Adobe Flash Player is outdated and vulnerable.
Detection Names (AdobeFlashPl_CKWH4.zip)	Avast (MacOS:Bundlore-DP [Adw]), BitDefender (Adware.MAC.Bundlore.DPS), ESET-NOD32 (OSX/Adware.Bundlore.AQ), Kaspersky (HEUR:Trojan-Downloader.OSX.Shlayer.a), Full List (VirusTotal)
Serving IP Address (mainsiteofupdatenow[.]best)	212.83.128.68
Promoted Unwanted Application	This page promotes a fake updater of Adobe Flash Player.
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, deceptive pages, adware and other PUAs.
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. ▼ Download Combo Cleaner for Mac To use full-featured product, you have to purchase a license for Combo Cleaner. Limited seven days free trial available. Combo Cleaner is owned and operated by Rcs Lt, the parent company of PCRisk.com read more.

If the browser opens mainsiteofupdatenow[.]best or other dubious web pages automatically, it is likely to have been forced by an installed PUA. In most cases, these apps open dubious pages, display unwanted ads and gather data. They help the developers to generate revenue and deliver no real value.

Having PUAs installed can lead to unwanted downloads and installations, problems relating to privacy, and browsing safety. Some users might even become victims of identity theft. If there are any unwanted apps installed on the browser or operating system, remove them immediately.

How did potentially unwanted applications install on my computer?

In most cases, unwanted apps are downloaded and installed when people click deceptive advertisements, or when developers distribute them using a deceptive marketing method called "bundling". They use bundling to trick people into downloading and installing PUAs through the set-ups of other (usually free) software.

They hide additionally-included apps in settings such as "Custom" or "Advanced" and hope that people will leave them unchanged. When downloads/installations are finished without changing the settings, additionally-included PUAs are often downloaded and installed by default.

How to avoid installation of potentially unwanted applications

Avoid downloading or installing software from untrustworthy, unofficial websites, through torrent clients, eMule (or other Peer-to-Peer networks), various third party downloaders, installers, and so on. Use direct download links and official websites. Check all settings such as "Custom" and "Advanced" that are included in the download or installation set-ups.

Decline any offers to download or install unwanted apps. Intrusive ads commonly redirect people to untrustworthy websites. This applies mostly to ads that are displayed on various dubious web pages. To stop browsers from causing unwanted redirects and showing ads, remove all unwanted plug-ins, add-ons, and extensions that are installed.

Also apply this to programs of this kind installed on the operating system. If your computer is already infected with PUAs, we recommend running a scan with Combo Cleaner Antivirus for macOS to automatically eliminate them.

Text on the main 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 within its pop-up:

Flash Player Update REQUIRED
Install latest version of Adobe Flash Player in order to continue watching.
Download

Screenshot of a second pop-up window:

Text within that window:

Software update

macOS Catalina Beta

10.15 - 6.45 GB
Update

Software Update
This update is recommended and no restart is needed

Your Adobe Flash Player may be out of date

The version of this plug-in on your computer might not include the latest security updates. Flash might not work until you download an update.
Update Download Flash...

Appearance of mainsiteofupdatenow[.]best (GIF), first example:

Appearance of mainsiteofupdatenow[.]best (GIF), second example:

Appearance of mainsiteofupdatenow[.]best (GIF), third example:

Screenshots of fake updaters/installers of Adobe Flash Player:

Instant automatic Mac malware removal: Manual threat removal might be a lengthy and complicated process that requires advanced IT 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 Mac By 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 seven days free trial available. Combo Cleaner is owned and operated by Rcs Lt, the parent company of PCRisk.com read more.

Quick menu:

• What is mainsiteofupdatenow.best scam website?
• How to identify a pop-up scam?
• How do pop-up scams work?
• How to remove fake pop-ups?
• How to prevent fake pop-ups?
• What to do if you fell for a pop-up scam?

How to identify a pop-up scam?

Pop-up windows with various fake messages are a common type of lures cybercriminals use. They collect sensitive personal data, trick Internet users into calling fake tech support numbers, subscribe to useless online services, invest in shady cryptocurrency schemes, etc.

While in the majority of cases these pop-ups don't infect users' devices with malware, they can cause direct monetary loss or could result in identity theft.

Cybercriminals strive to create their rogue pop-up windows to look trustworthy, however, scams typically have the following characteristics:

• Spelling mistakes and non-professional images - Closely inspect the information displayed in a pop-up. Spelling mistakes and unprofessional images could be a sign of a scam.
• Sense of urgency - Countdown timer with a couple of minutes on it, asking you to enter your personal information or subscribe to some online service.
• Statements that you won something - If you haven't participated in a lottery, online competition, etc., and you see a pop-up window stating that you won.
• Computer or mobile device scan - A pop-up window that scans your device and informs of detected issues - is undoubtedly a scam; webpages cannot perform such actions.
• Exclusivity - Pop-up windows stating that only you are given secret access to a financial scheme that can quickly make you rich.

Example of a pop-up scam:

How do pop-up scams work?

Cybercriminals and deceptive marketers usually use various advertising networks, search engine poisoning techniques, and shady websites to generate traffic to their pop-ups. Users land on their online lures after clicking on fake download buttons, using a torrent website, or simply clicking on an Internet search engine result.

Based on users' location and device information, they are presented with a scam pop-up. Lures presented in such pop-ups range from get-rich-quick schemes to fake virus scans.

How to remove fake pop-ups?

In most cases, pop-up scams do not infect users' devices with malware. If you encountered a scam pop-up, simply closing it should be enough. In some cases scam, pop-ups may be hard to close; in such cases - close your Internet browser and restart it.

In extremely rare cases, you might need to reset your Internet browser. For this, use our instructions explaining how to reset Internet browser settings.

How to prevent fake pop-ups?

To prevent seeing pop-up scams, you should visit only reputable websites. Torrent, Crack, free online movie streaming, YouTube video download, and other websites of similar reputation commonly redirect Internet users to pop-up scams.

To minimize the risk of encountering pop-up scams, you should keep your Internet browsers up-to-date and use reputable anti-malware application. For this purpose, we recommend Combo Cleaner Antivirus for macOS.

What to do if you fell for a pop-up scam?

This depends on the type of scam that you fell for. Most commonly, pop-up scams try to trick users into sending money, giving away personal information, or giving access to one's device.

• If you sent money to scammers: You should contact your financial institution and explain that you were scammed. If informed promptly, there's a chance to get your money back.
• If you gave away your personal information: You should change your passwords and enable two-factor authentication in all online services that you use. Visit Federal Trade Commission to report identity theft and get personalized recovery steps.
• If you let scammers connect to your device: You should scan your computer with reputable anti-malware (we recommend Combo Cleaner Antivirus for macOS) - cyber criminals could have planted trojans, keyloggers, and other malware, don't use your computer until removing possible threats.
• Help other Internet users: report Internet scams to Federal Trade Commission.

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