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How to avoid getting notifications from security-defender.xyz

Also Known As: Ads by security-defender.xyz
Damage level: Medium

What kind of page is security-defender[.]xyz?

Security-defender[.]xyz is a website that our malware researchers have discovered while looking for pages designed to trick visitors into agreeing to receive deceptive notifications. It is an untrustworthy page asking for permission to deliver notifications and displaying deceptive content.

security-defender[.]xyz ads

Security-defender[.]xyz in detail

We have ended up on security-defender[.]xyz multiple times while visiting pages (such as torrent download, illegal streaming, and similar sites) that use rogue advertising networks. At the time of testing, security-defender[.]xyz performed a fake virus scan and displayed a deceptive message claiming that a computer is infected with five viruses.

After allowing this page to show notifications, we began to see notifications promoting various scams, phishing pages, shady applications, and so on. Some of them were used to promote McAfee - a legitimate antivirus software. It means that affiliates are using these notifications to collect illegitimate commissions.

Threat Summary:
Name Ads by security-defender.xyz
Threat Type Push notifications ads, Unwanted ads, Pop-up ads
Detection Names Avira (Malware), Bfore.Ai PreCrime (Malicious), ESET (Malware), Forcepoint ThreatSeeker (Suspicious), Full List Of Detections (VirusTotal)
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.
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Websites of this type in general

A list of websites similar to security-defender[.]xyz is long. A couple of examples of pages similar to this one are gloonseetaih[.]com, mobiletracking[.]ru, freeiphone[.]info. All of them ask for permission to show shady notifications. Most of them get opened through other dubious pages.

How did security-defender[.]xyz gain permission to deliver spam notifications?

Every time security-defender[.]xyz is visited while it does not have permission to show notifications, a browser displays a pop-up window with "Allow", "Allow Notifications", or a similar button. Security-defender[.]xyz starts showing notifications after clicking that button (agreeing to receive notifications).

How to prevent deceptive sites from delivering spam notifications?

Click the "Block", "Block Notifications", or equivalent button when websites like ecurity-defender[.]xyz (or another dubious site) ask for permission to show notifications. Another way to avoid being bombarded with unwanted notifications is to close the page before clicking anything. If you are receiving unwanted notifications, we recommend running a scan with Combo Cleaner Antivirus for Windows to automatically eliminate them.

Appearance of security-defender[.]xyz website (GIF):

security-defender[.]xyz website appearance (GIF)

Screenshot of a browser notification delviered by security-defender[.]xyz website:

security-defender[.]xyz pop-up notification

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:
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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 security-defender[.]xyz in the right lower corner of my desktop?

The only reason why security-defender[.]xyz is showing notifications is because it has been allowed to show them. Websites get permission when visitors click the "Allow" or a similar button while visiting them.

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

A notification is harmless by itself. However, it can open a malicious website (or another untrustworthy site).

Is security-defender[.]xyz a virus?

Neither security-defender[.]xyz nor other pages of this type are viruses. As a rule, they promote various scams, questionable applications, and websites. Sometimes, they can promote legitimate software. Although, legitimate software developers have nothing to do with these pages.

Will Combo Cleaner remove security-defender[.]xyz ads automatically or manual steps are still required?

Yes, Combo Cleaner will scan the operating system and block notifications from security-defender[.]xyz (remove permissions granted for this site). It will also block further access to this site. No additional steps will be required.

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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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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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