How to uninstall apps promoting landoseseq.com and similar sites?

What is landoseseq[.]com?

Landoseseq[.]com is a deceptive website designed to scare its visitors into downloading and installing a potentially unwanted application (PUA). Like most websites of this type, landoseseq[.]com pretends to be an official Apple website and claims to have detected a Trojan on a device.

Notifications, virus alerts, or other messages on websites like landoseseq[.]com are fake and should be ignored. Typically, pages like landoseseq[.]com are promoted through other untrustworthy pages, deceptive advertisements, or potentially unwanted apps.

Landoseseq[.]com displays a fake system notification saying that the iPhone has been compromised. Also, it displays a fake message saying that a device is infected with a Trojan, and accounts, photos, and payment data will become available if that Trojan is not removed immediately.

The main purpose of this page is to trick visitors into downloading and installing a certain application that is supposed to remove the "detected" Trojan and prevent it from causing further damage.

Deceptive websites like landoseseq[.]com can be used to advertise browser hijackers, adware (and other PUAs), or even malicious apps. Although, sometimes, these sites advertise legitimate apps. In one way or another, applications should be downloaded only from official pages, App Store.

If a browser opens landoseseq[.]com and other untrustworthy pages regularly, then it is likely that a device has a PUA installed on it. It is common that PUAs serve advertisements and (or) gather data as well. In most cases, PUAs display coupons, banners, surveys, pop-up ads.

More importantly, those ads tend to be used to advertise untrustworthy websites or distribute (download or install) unwanted apps by running certain scripts. PUAs usually gather details like IP addresses, geolocations, addresses of visited websites, entered search queries (and other browsing data).

Although, there are apps of this kind that can access sensitive information. What is worse, there is always a possibility that their developers would sell gathered information to third parties (potentially cybercriminals), use it for marketing (or other) purposes.

Threat Summary:

Name	landoseseq.com pop-up
Threat Type	Phishing, Scam, Mac malware, Mac virus
Fake Claim	iPhone is infected with a Trojan and its memory is damaged
Serving IP Address	159.65.221.212
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. ▼ Download Combo Cleaner for Mac To use full-featured product, you have to purchase a license for Combo Cleaner. Limited three days free trial available.

More examples of pages using scare tactics to trick users into installing potentially unwanted software are security-protect[.]systems, penit[.]xyz, and alert-info[.]space. Usually, these pages claim to have detected malware on a device. Although, they could display fake system error notifications as well.

In one way or another, messages/notifications on these sites are never real. It is worthwhile to mention that PUAs are called potentially unwanted because most users download and install them unknowingly, unintentionally.

How did potentially unwanted applications install on my computer?

Quite often, users download and install potentially unwanted applications together with other programs. When PUAs are bundled in downloaders, installers for those programs. In such cases, downloaders or installers have settings "Manual", "Custom", "Advanced" (or other settings), or some checkboxes.

Users agree to download or install bundled apps when they do not change those settings or untick checkboxes before finishing downloads or installations. Sometimes users unintentionally cause unwanted downloads or installations by clicking deceptive advertisements.

More precisely, by clicking advertisements designed to run certain scripts. Typically, such ads appear on questionable, untrustworthy web pages.

How to avoid installation of potentially unwanted applications?

Applications should never be downloaded (or installed) via third-party downloaders (or installers), Peer-to-Peer networks like eMule, torrent clients, unofficial sites, etc. It is recommended to use only official websites and platforms such as App Store.

Downloaders and installers that have "Custom", "Advanced" and other similar settings or checkboxes should be checked for bundled applications. It is important to decline unwanted offers before finishing downloads, installations.

Ads on shady pages should not be clicked as well - most of those ads advertise untrustworthy sites. Sometimes they can be designed to download, install unwanted apps.

Unwanted extensions, plug-ins or add-ons installed on a browser and apps of this kind installed on the operating system should be removed as soon as possible. If your computer is already infected with PUAs, we recommend running a scan with Combo Cleaner Antivirus for macOS to automatically eliminate them.

Text in the fake system notification displayed by landoseseq[.]com:

YOUR IPHONE HAS BEEN COMPROMISED
Immediate Action Is Required!
[OK]

Screenshot of the background page:

Text in this page:

Important notice. Your device is currently infected with a Trojan virus!

Your phone's memory is already having 17% of damage.
Prompt action is required, otherwise, the device will become defective and all your data including accounts, photos, and payment data will be available to third parties.

Immediately install the trusted free app from the AppStore to remove the virus and secure your device.

1 minutes and 40 seconds

[Remove Virus]
Detected By Apple

To enable pop-up blocking, fraudulent website warnings, and remove web browsing data in mobile Apple devices, follow these steps:

First, go to "Settings", and then scroll down to find and tap "Safari".

Check if the "Block Pop-ups" and "Fraudulent Website Warning" toggles are enabled. If not, enable them immediately. Then, scroll down and tap "Advanced".

Tap "Website Data" and then "Remove All Website Data".

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 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 three days free trial available.

Quick menu:

• What is landoseseq[.]com?
• 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 adware and browser hijackers from a Mac computer:

Potentially unwanted applications removal:

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.

Remove landoseseq.com 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.

landoseseq.com pop-up removal from Internet browsers:

Remove malicious extensions from Safari:

Remove landoseseq.com 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 landoseseq.com 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 landoseseq.com pop-up related Google Chrome add-ons:

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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