Browser HijackersRemoval Guide

Remove Checkosec.pro pop-up ads (Virus Removal Guide)

Checkosec.pro is a domain that tries to trick you into subscribing to its browser notifications so that it can send pop-up spam directly to your computer .

What is Checkosec.pro?

Chrome browser is redirected to Checkosec.pro

Checkosec.pro is a malicious site that displays fake messages to trick you into subscribing to its browser notifications. These are a some of the fake error messages that the Checkosec.pro will show to trick you into clicking the “Allow” button:

To access to the video, click "Allow"
Click "Allow", to watch the video
Click "Allow", to start downloading
Click "ALLOW" to play the video
Stream and download available
Type Allow to verify that you are not a robot
Click Allow to watch the video

You should not click on the “Allow” button when you see such messages. If you click on the “Allow” button, you will start seeing spam pop-ups from Checkosec.pro on your desktop or phone, even when the browser is closed. The Checkosec.pro spam pop-up are for 18+ sites, online games, fake software updates, unwanted programs and etc.

Why am I seeing the Checkosec.pro notification ads?

You are seeing the Checkosec.pro ads because your PC is infected with a malware or a site that you have just visited has redirected you to this domain.

Less than reputable sites can display malicious banners that redirect your browser to Checkosec.pro to generate advertising revenue. If this happens, you can close the page and install a free browser extension like Adblock to block the ads. However, if you continuously see pop-ups from Checkosec.pro, then your computer might be infected with a computer virus, and we will need to scan your system for malware and eliminate it.

Here are a few typical signs that you have a infected PC:

  • Advertisements appear in places they shouldn’t be;
  • Your homepage has changed without your permission;
  • Website links redirect to questionable sites;
  • Web pages that you typically visit are not displaying properly;
  • Browser pop-ups appear which recommend fake updates or other software;
  • Other unwanted programs might get installed without your knowledge;

To check your computer for the Checkosec.pro adware and remove it for free, please use the guide below.

Remove Checkosec.pro Automatically:

The easiest method to stop Checkosec.pro ads is to run an anti-malware program capable of detecting adware in general and Checkosec.pro in particular. You may try GridinSoft Anti-Malware. It’s good at detecting and removing adware and other PUPs (potentially unwanted programs).


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Other software that may be able to get rid of Checkosec.pro:

Note: After removing the adware you might still need to disable Checkosec.pro notifications manually (see the step named Delete Checkosec.pro Notifications).

You can also try to remove Checkosec.pro by hand using the following instructions.

Remove Checkosec.pro From Programs and Features:

Go to Programs and Features, uninstall suspicious programs, programs you don’t remember installing, or programs you installed just before Checkosec.pro appeared on your browser for the first time. When you are not sure if a program is safe, look for the answer on the Internet.

Windows XP:

  1. Click Start.
  2. In the Start menu select Settings => Control Panel.
  3. Find and click Add or Remove Programs.
  4. Select the program.
  5. Click Remove.

Windows Vista:

  1. Click Start.
  2. In the Start menu select Control Panel.
  3. Find and click Uninstall a program.
  4. Select the program.
  5. Click Uninstall.

Windows 7:

  1. Click Start.
  2. In the Start menu select Control Panel.
  3. Find and select Programs and Features or Uninstall a program.
  4. Select the program.
  5. Click Uninstall.

Windows 8 / Windows 8.1:

  1. Press and hold Windows key Windows key and hit X key.
  2. Select Programs and Features from the menu.
  3. Select the program.
  4. Click Uninstall.

Windows 10:

  1. Press and hold Windows key Windows key and hit X key.
  2. Select Programs and Features from the menu.
  3. Select the program.
  4. Click Uninstall.

Delete Adware App From File Explorer:

This step is for experienced computer users. You might accidentally delete something you weren’t supposed to. Sometimes malicious programs don’t show up in Programs and Features. Check also %ProgramFiles%, %ProgramFiles(x86)%, and especially %AppData% and %LocalAppData% (these are shortcuts; type or copy and paste them into the address bar of File Explorer). If you see folders with unfamiliar names, see what’s inside, google those names to find out if they belong to legitimate programs. Delete the ones that are obviously associated with malware. If you are not sure, back them up before deleting them (copy to a different location, for example to a thumb drive). Or you can easy to use GridinSoft Anti-Malware for search and remove such files:


Remove Checkosec.pro From Browsers:

Remove any suspicious extensions or extension you don’t recognize from browsers. Or your can easy to use Reset Browser Settings via GridinSoft Anti-malware:

Remove Checkosec.pro from Google Chrome:

  1. Click on three dots menu button three dots menu at the top right corner of the window.
  2. Select More toolsExtensions.
  3. Click REMOVE to uninstall an extension.
  4. Click Remove in the dialog box.

Remove Checkosec.pro from Mozilla Firefox:

  1. Click on menu button Menu button and select Add-ons.
  2. Go to Extensions tab.
  3. To uninstall an add-on, click on Remove button next to it.

Remove Checkosec.pro from Internet Explorer:

  1. Click Tools button Tools button in the top-right corner.
  2. Select Manage add-ons.
  3. In the drop-down menu under Show: select All add-ons.
  4. To delete an add-on, double-click it; in the new window click Remove.

Remove Checkosec.pro from Opera:

  1. Press Ctrl +Shift + E keys to open extensions manager.
  2. To remove an add-on, click on the x button next to it.
  3. Click OK when asked to confirm.

Remove Checkosec.pro from Safari:

  1. On the top menu select Safari => Preferences.
  2. Select Extensions tab.
  3. Select an extension you want to delete and click Uninstall button next to it.

Delete Checkosec.pro Notifications:

Remove Checkosec.pro Notifications From Google Chrome:

  1. Open chrome://settings/content/notifications (just copy this and paste into the address bar of Chrome).
  2. Delete all rogue notifications by clicking three vertical dots button next to each and selecting Remove.

Remove Checkosec.pro Notifications From Mozilla Firefox:

  1. Click on menu button Menu button and select Options.
  2. Select Privacy & Security on the left side of the window.
  3. Scroll down to Permissions section and click Settings… button next to Notifications.
  4. Find sites you down’t want to see notifications from, click on drop-down menu next to each and select Block.
  5. Click Save Changes button.

Get rid of Checkosec.pro pop-ups and notifications on Android:

Disable Checkosec.pro notifications:

Note: Steps might differ a little depending on the version of your Android.

  1. Tap Settings.
  2. Select Apps & notifications => Apps.
  3. Find and tap the browser that displays Checkosec.pro notifications.
  4. Tap Notifications.
  5. Find Checkosec.pro in the list and disable it.

Stop Checkosec.pro redirects:

If Checkosec.pro is opening up on new tabs in your browser every now and then, that indicates you have adware. Probably one on the apps you installed lately is triggering these pop-ups. Uninstall recenly installed and questionable apps you have. Alternatively, usage Loaris Trojan Remover or one more anti-malware tools to check your device for malware.

Pop-ups and ads on Android may also not be caused by anything set up however originated from sites instead. To get rid of those ads, you can utilize an Trojan Scanner:

Google Play

How to Protect Your COMPUTER From Checkosec.pro:

  • Get a powerful anti-malware software application capable of identifying and eliminating PUPs. Having several on-demand scanners would certainly be a great suggestion as well.
  • Maintain Windows firewall program allowed or get a third-party one.
  • Readjust your browsers’ setups to block pop-ups and also to fill plug-ins only when clicked.
  • Download and install as well as utilize Adguard, uBlock Origin, Adblock, or Adblock Plus browser extension/add-on to obstruct third-party promotions on websites.
  • When mounting free software or shareware, be reasonable and don’t rush via the procedure. Pick Custom or Advanced setup mode, try to find checkboxes that request your permission to mount third-party applications and also uncheck them, read End User License Agreement to see to it nothing else is going to obtain installed. You can make exceptions for the apps you know and count on, certainly. If declining from installing unwanted programs is not feasible, we encourage you to cancel the setup completely.
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Daniel Zimmermann

Daniel Zimmermann has been writing on security and malware subjects for many years and has been working in the security industry for over 10 years. Daniel was educated at the Saarland University in Saarbrücken, Germany and currently lives in New York.

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