How to remove notifications/ads delivered by the checkosec.pro site

What kind of page is checkosec[.]pro?

While reviewing suspect websites, our researchers found the checkosec[.]pro rogue page. It promotes browser notification spam and redirects users to other (likely unreliable/hazardous) sites.

Users most commonly access checkosec[.]pro and webpages akin to it via redirects caused by websites utilizing rogue advertising networks.

Checkosec[.]pro overview

At the time of research, checkosec[.]pro displayed a dark page with instructions to – "Click 'Allow' to confirm that you are not a robot". However, it is noteworthy that the behavior of rogue websites (i.e., what they load and/or promote) might vary based on the visitor's IP address/ geolocation.

The CAPTCHA test is fake, and complying with it gives checkosec[.]pro permission to deliver browser notifications. Rogue webpages use their notifications to run intrusive ad campaigns. These adverts may endorse online scams, untrustworthy/harmful software, and even malware.

In summary, through pages like checkosec[.]pro – users can experience system infections, serious privacy issues, financial losses, and identity theft.

Threat Summary:

Name	Ads by checkosec.pro
Threat Type	Push notifications ads, Unwanted ads, Pop-up ads
Detection Names	N/A (VirusTotal)
Serving IP Address	104.21.48.170
Symptoms	Seeing advertisements not originating from the sites you are browsing. Intrusive pop-up ads. Decreased Internet browsing speed.
Distribution Methods	Deceptive pop-up ads, false claims within visited websites, potentially unwanted applications (adware)
Damage	Decreased computer performance, browser tracking - privacy issues, possible additional malware infections.
Malware Removal (Windows)	To eliminate possible malware infections, scan your computer with legitimate antivirus software. Our security researchers recommend using Combo Cleaner. ▼ Download Combo Cleaner To use full-featured product, you have to purchase a license for Combo Cleaner. 7 days free trial available. Combo Cleaner is owned and operated by Rcs Lt, the parent company of PCRisk.com read more.

Browser notification spam in general

Buyadzdesign[.]club, yodste[.]com, and websulads[.]top are merely a couple of our latest rogue webpage finds. Websites of this kind are designed to push browser notifications, but how they achieve this can differ greatly.

These advertisements promote deceptive and malicious material. Remember that any genuine content encountered through spam notifications is most likely endorsed by scammers who abuse its affiliate programs to obtain illegitimate commissions.

How did checkosec[.]pro gain permission to deliver spam notifications?

You have likely accessed checkosec[.]pro at some point and permitted the ad delivery by clicking "Allow", "Allow Notifications", or an analogous option. Keep in mind that no website can deliver browser notifications (adverts) without user permission.

How to prevent deceptive sites from delivering spam notifications?

It is important to always be selective when enabling sites to display browser notifications. Questionable webpages must not be permitted to deliver said ads; instead, these requests have to be ignored or denied (i.e., by pressing "Block", "Block Notifications", etc.).

Should your browser continuously force-open suspicious websites without prompt, it could be due to adware installed on it or the system. If your computer is already infected with rogue applications, we recommend running a scan with Combo Cleaner Antivirus for Windows to automatically eliminate them.

Screenshot of a notification (advertisement) displayed by the checkosec[.]pro website:

Appearance of the checkosec[.]pro website (GIF):

Instant automatic 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 malware. Download it by clicking the button below:
▼ DOWNLOAD Combo Cleaner 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. 7 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 Ads by checkosec.pro?
• STEP 1. Remove spam notifications from Google Chrome
• STEP 2. Remove spam notifications from Google Chrome (Android)
• STEP 3. Remove spam notifications from Mozilla Firefox
• STEP 4. Remove spam notifications from Microsoft Edge
• STEP 5. Remove spam notifications from Safari (macOS)

Disable unwanted browser notifications:

Video showing how to disable web browser notifications:

Remove spam notifications from Google Chrome:

Click the Menu button (three dots) on the right upper corner of the screen and select "Settings". In the opened window select "Privacy and security", then click on "Site Settings" and choose "Notifications".

In the "Allowed to send notifications" list search for websites that you want to stop receiving notifications from. Click on the three dots icon near the website URL and click "Block" or "Remove" (if you click "Remove" and visit the malicious site once more, it will ask to enable notifications again).

Remove spam notifications from Google Chrome (Android):

Tap the Menu button (three dots) on the right upper corner of the screen and select "Settings". Scroll down, tap on "Site settings" and then "Notifications".

In the opened window, locate all suspicious URLs and tap on them one-by-one. Once the pop-up shows up, select either "Block" or "Remove" (if you tap "Remove" and visit the malicious site once more, it will ask to enable notifications again).

Remove spam notifications from Mozilla Firefox:

Click the Menu button (three bars) on the right upper corner of the screen. Select "Settings" and click on "Privacy & Security" in the toolbar on the left hand side of the screen. Scroll down to the "Permissions" section and click the "Settings" button next to "Notifications".

In the opened window, locate all suspicious URLs and block them using the drop-down menu or either remove them by clicking "Remove Website" at the bottom of the window (if you click "Remove Website" and visit the malicious site once more, it will ask to enable notifications again).

Remove spam notifications from Microsoft Edge:

Click the menu button (three dots) on the right upper corner of the Edge window and select "Settings". Click on "Cookies and site permissions" in the toolbar on the left hand side of the screen and select "Notifications".

Click three dots on the right hand side of each suspicious URL under "Allow" section and click "Block" or "Remove" (if you click "Remove" and visit the malicious site once more, it will ask to enable notifications again).

Remove spam notifications from Safari (macOS):

Click "Safari" button on the left upper corner of the screen and select "Preferences...". Select the "Websites" tab and then select "Notifications" section on the left pane.

Check for suspicious URLs and apply the "Deny" option using the drop-down menu or either remove them by clicking "Remove" at the bottom of the window (if you click "Remove" and visit the malicious site once more, it will ask to enable notifications again)

How to avoid browser notification spam?

Internet users should be very skeptical when being asked to allow notifications. While this is a useful feature that allows you to receive timely news from websites you like, deceptive marketers frequently abuse it.

Only allow notifications from websites that you fully trust. For added security - use an anti-malware application with a real-time web browsing monitor to block shady websites that tries to trick you into allowing spam notifications. We recommend using Combo Cleaner Antivirus for Windows.

Frequently Asked Questions (FAQ)

Why am I seeing ads (browser notifications) delivered by checkosec[.]pro in the right lower corner of my desktop?

Websites need user consent to deliver browser notifications (advertisements). Hence, you've likely visited checkosec[.]pro and pressed "Allow", "Allow Notifications", or an analogous option displayed on this webpage.

I have clicked on notification ads, is my computer infected?

While clicking on a browser notification is harmless – that does not extend to the content these ads may promote. Spam notifications commonly push deceptive/hazardous websites and software that can cause severe issues (including malware infections).

Is checkosec[.]pro a virus?

Rogue websites (e.g., checkosec[.]pro, etc.) are not considered to be viruses, even if they endorse virulent content. Sites of this kind often promote online scams, untrustworthy/dangerous software, and malware.

Will Combo Cleaner remove checkosec[.]pro ads automatically or manual steps are still required?

Yes, Combo Cleaner can scan devices and revoke the permissions granted to the checkosec[.]pro page. It can also deny all further access to this and other rogue/malicious sites. Therefore, additional steps will not be required.

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