How to stop the re-captha-version-3-21.top site from delivering notifications

What kind of page is re-captha-version-3-21[.]top?

Re-captha-version-3-21[.]top is the address of a rogue site that promotes browser notification spam and redirects visitors to different (likely unreliable/malicious) webpages.

Most users access pages like re-captha-version-3-21[.]top via redirects caused by websites utilizing rogue advertising networks. Our researchers found this webpage while reviewing sites that use said networks.

It is important to note that the developers of re-captha-version-3-21[.]top website have released many websites with virtually identical domains. The only difference is last two digits (e.g., "re-captha-version-3-22[.]top", "re-captha-version-3-23[.]top", "re-captha-version-3-24[.]top", etc.)

Re-captha-version-3-21[.]top overview

It must be mentioned that the content encountered on and through rogue sites might vary depending on the visitor's IP address/ geolocation.

At the time of research, the re-captha-version-3-21[.]top webpage displayed a fake CAPTCHA verification test. The page depicted an animated cartoon-style robot saying – "CLICK ALLOW TO CONFIRM THAT YOU ARE NOT A ROBOT!". Once the "Allow" button is pressed, re-captha-version-3-21[.]top gains permission to spam users with notifications/advertisements.

After we clicked this option, we were redirected to a site running a scam similar to "Loyalty Program", "Apple iPhone 14 Winner", "Amazon loyalty program", and innumerous others.

Rogue websites use their notifications to run intrusive advert campaigns. These ads primarily endorse online scams, untrustworthy/harmful software, and malware.

In summary, via webpages like re-captha-version-3-21[.]top – users may experience system infections, severe privacy issues, financial losses, and even identity theft.

Threat Summary:

Name	Ads by re-captha-version-3-21.top
Threat Type	Push notifications ads, Unwanted ads, Pop-up ads
Detection Names	Combo Cleaner (Malware), CRDF (Malicious), CyRadar (Malicious), G-Data (Malware), Kaspersky (Phishing), Full List Of Detections (VirusTotal)
Serving IP Address	172.67.173.228
Observed Domains	e.re-captha-version-3-21[.]top; d.re-captha-version-3-21[.]top; a.re-captha-version-3-21[.]top
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

Mobiledevice-protection[.]com, totalfreshwords[.]com, fiveminutes[.]biz, treasureprize[.]top, and bciseo[.]com are just some examples of rogue pages that we have inspected recently. Websites of this kind deliver browser notifications that promote deceptive and malicious content.

Note that while legitimate products or services may be encountered via these advertisements – they are highly unlikely to be endorsed in this manner by any official parties. It is most probable that this promotion is performed by scammers who abuse the content's affiliate programs to obtain illegitimate commissions.

How did re-captha-version-3-21[.]top gain permission to deliver spam notifications?

Websites cannot display browser notifications without user permission, and re-captha-version-3-21[.]top is not an exception. Therefore, if you are receiving these ads from this webpage, it means that you've likely visited re-captha-version-3-21[.]top at some point and permitted their delivery by clicking "Allow", "Allow Notifications", or an analogous option.

How to prevent deceptive sites from delivering spam notifications?

To avoid receiving undesirable browser notifications – do not enable questionable websites to deliver them (i.e., do not click "Allow", "Allow Notifications", etc.). We advise denying notification delivery from such pages (i.e., selecting "Block", "Block Notifications", etc.) or ignoring these requests in their entirety.

In case of continuous unprompted redirects to suspicious sites, check the device for installed adware. 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/ad displayed by the re-captha-version-3-21[.]top website:

Appearance of the re-captha-version-3-21[.]top website (GIF):

Appearance of re-captha-version-3-23[.]top website:

Appearance of re-captha-version-3-25[.]top website:

Video showing how to eliminate ads delivered by re-captha-version-3-21[.]top using Combo Cleaner:

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 re-captha-version-3-21.top?
• 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 re-captha-version-3-21[.]top in the right lower corner of my desktop?

Sites require user consent to display browser notifications (advertisements). Hence, you have likely accessed re-captha-version-3-21[.]top and pressed "Allow", "Allow Notifications", or a similar option presented on this webpage.

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

While clicking on a browser notification is harmless in itself, that does not extend to the content these ads promote. Spam notifications commonly push deceptive/malicious sites and software capable of causing serious problems (including system infections).

Is re-captha-version-3-21[.]top a virus?

Websites like re-captha-version-3-21[.]top are not considered to be viruses, even though they can promote virulent content. Rogue pages endorse online scams, unreliable/dangerous software, and even malware.

Will Combo Cleaner remove re-captha-version-3-21[.]top ads automatically or manual steps are still required?

Yes, Combo Cleaner can scan systems and remove the permissions given to the re-captha-version-3-21[.]top webpage. It can also restrict all further access to this and other rogue, deceptive/scam, and malicious sites. Therefore, no additional steps will be necessary.

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