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How to remove the advertisements delivered by captchafilter.top site?

Also Known As: captchafilter.top pop-up
Damage level: Medium

What is the captchafilter[.]top site?

Captchafilter[.]top is an untrustworthy website designed to load questionable content, push its browser notifications, and/or redirect visitors to other (likely unreliable or malicious) pages.

The Internet is rife with such sites; onestoreblog.comnews-themes.com, and brokenbad.biz are but a few examples. Users typically access such rogue webpages via redirects caused by suspect sites, intrusive advertisements, or installed PUAs (Potentially Unwanted Applications).

captchafilter[.]top pop-up redirects

Captchafilter[.]top in detail

The behavior of captchafilter[.]top is dictated by its visitors' IP addresses/ geolocations. This information determines whether users are presented with dubious material and/or redirected elsewhere. Additionally, like most similar websites, captchafilter[.]top uses deceptive content (fake CAPTCHA verification) to trick visitors into allowing its browser notifications.

Should they be enabled, captchafilter[.]top will start running intrusive advertisement campaigns. The delivered ads are more than just a nuisance, they also endanger device/user safety. When clicked on, intrusive adverts redirect to various unreliable/malicious sites, and some can download/install software (e.g., PUAs) without user consent.

Threat Summary:
Name captchafilter.top pop-up
Threat Type Push notifications ads, Unwanted ads, Pop-up ads
Detection Names Fortinet (Malware), Full List Of Detections (VirusTotal)
Observed Domains a.captchafilter[.]top; b.captchafilter[.]top; h.captchafilter[.]top; f.captchafilter[.]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, 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.
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Potentially unwanted application overview

Despite their legitimate appearance, PUAs do not operate as advertised and can have harmful abilities instead. Unwanted apps can force-open suspect and dangerous websites, deliver intrusive advert campaigns, hijack browsers, and gather sensitive information.

In summary, the presence of PUAs on devices can lead to system infections, serious privacy issues, financial losses, and even identity theft.

How did adware install on my computer?

PUAs are distributed using the "bundling" marketing technique - packing regular software with unwanted/malicious additions. Rushed download/installation processes increase the risk of allowing bundled content into the device. Intrusive advertisements spread PUAs as well. Once clicked on, the adverts can execute scripts to make stealthy downloads/installations. Some PUAs may also have "official" download pages.

How to avoid installation of potentially unwanted applications?

It is recommended to always research software and download from official/verified sources. Dubious download channels, e.g., unofficial and free file-hosting sites, Peer-to-Peer sharing networks, and other third-party downloaders - commonly offer bundled content.

When downloading/installing, it is advised to read terms, study possible options, use the "Custom/Advanced" settings, and opt-out from all additions. Intrusive advertisements appear legitimate, yet they redirect to highly questionable websites (e.g., adult-dating, gambling, pornography, etc.).

In case of encounters with ads and/or redirects of this kind, the device must be checked and all suspicious applications and browser extensions/plug-ins detected - immediately removed from it. If your computer is already infected with rogue applications, we recommend running a scan with Combo Cleaner Antivirus for Windows to automatically eliminate them.

Appearance of captchafilter[.]top website (GIF):

captchafilter[.]top website appearance (GIF)

Instant automatic 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 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:

Disable unwanted browser notifications:

Video showing how to disable web browser notifications:

Google Chrome logoRemove 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".

Disable web browser notifications in Google Chrome (step 1)

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).

Disable web browser notifications in Google Chrome (step 2)

Android logoRemove 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".

Disable web browser notifications in Google Chrome - Android (step 1)

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).

Disable web browser notifications in Google Chrome - Android (step 2)

Mozilla Firefox logoRemove 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".

Disable web browser notifications in Mozilla Firefox (step 1)

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).

Disable web browser notifications in Mozilla Firefox (step 2)

Microsoft Edge logoRemove 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".

Disable web browser notifications in Microsoft Edge (step 1)

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).

Disable web browser notifications in Microsoft Edge (step 2)

Safari logoRemove 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.

Disable web browser notifications in Safari - macOS (step 1)

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)

Disable web browser notifications in Safari - macOS (step 2)

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 captchafilter[.]top in the right lower corner of my desktop?

It is most likely that you have visited captchafilter[.]top and permitted it to display notifications. It is noteworthy that such websites are typically accessed inadvertently. Furthermore, these rogue pages use deceptive content (e.g., clickbait, fake CAPTCHA verification, etc.) to trick visitors into enabling their browser notifications.

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

Clicking on a notification is not dangerous; however, the websites and apps promoted through these advertisements can be malicious and cause various issues.

Is captchafilter[.]top a virus?

While captchafilter[.]top itself is not a virus, it can operate as a tool for promoting scams and even malicious software.

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

Yes, Combo Cleaner can scan devices and remove all the permissions granted for this website. It will block all further access to captchafilter[.]top as well. No additional steps will be necessary.

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About the author:

Tomas Meskauskas

Tomas Meskauskas - expert security researcher, professional malware analyst.

I am passionate about computer security and technology. I have an experience of over 10 years working in various companies related to computer technical issue solving and Internet security. I have been working as an author and editor for pcrisk.com since 2010. Follow me on Twitter and LinkedIn to stay informed about the latest online security threats. Contact Tomas Meskauskas.

PCrisk security portal is brought by a company RCS LT. Joined forces of security researchers help educate computer users about the latest online security threats. More information about the company RCS LT.

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Removal Instructions in other languages
Software uninstall instructions
Malware activity

Global malware activity level today:

Medium threat activity

Increased attack rate of infections detected within the last 24 hours.

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