Device-defense Ads Removal Guide — How to Fix It?

Device-defense pop-up notifications can appear out of the blue, covering the material of the page you checked or opening your browser when you don’t desire it to be opened.

Clicking the Device-defense advertisement can lead to the injection of various malware or unwanted programs. In this article, you will see the guideline of Device-defense popups clearing in several ways, as well as examining your system for extra viruses existence.

It is better to prevent, than repair and repent!

Removing Device-defense manually may take hours and may damage your PC in the process. I recommend you to download GridinSoft Anti-Malware for threats removal. Allows to complete scan and cure your PC during the trial period.

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What are Device-defense pop-ups?

Device-defense popups are a result of adware action. Adware is a type of malware that suggests you the pay-per-view of pay-per-click advertisements, which creates a large volume of profit for adware representatives. These promotions may consist of explicit composition, or have a link to malicious content/website, considering that adware maintainers have no reason to check the goodness of the content they are going to reveal – their single target is money.

Device-defense push notification.

Pop-up advertising itself is an excellent, affordable and also extremely effective advertising method¹. It permits the vendor to attach the buyers’ attention to their site, and the customers to receive the dynamic updates on the goods they want to purchase. When the consumer will receive a pop-up alert that the TV set he likes to purchase is available at the online store he/she checked out earlier with a 15% price cut, one will undoubtedly use this chance and buy it. Considering the very low price for the popups and their targeting, such an advertising instrument is a favourite thing amongst the advertising teams of large online sellers.

Nonetheless, such a profitable strategy could not be missed by virus developers. Ability to demonstrate the popup ads forcibly to the people of malware attack is an ideal basis for malicious adjustments with the popup ads. And Device-defense.com advertisements is among hundreds that are “employed” in this scheme.

Here is a details for the Device-defense site

How have I got the Device-defense virus?

There are a huge amount of ways of getting infected by the adware that lead to the Device-defense popups tornado. A lion’s part of this virus incidents is after the free software or cracked programs, that are spread on the peering networks. Free software may likewise be downloaded from the main site, and the adware is presented as a legitimate bundled program.

There is no need to blame yourself. A lot of people regularly utilize the uncertain programs from untrusted providers: abandonware, various utilities that are free of cost, and even hacked programs. Every one of these sorts of programs are risky, due to the fact that it is extremely simple to integrate a Device-defense malware under the guise of part of the license hacking script, or as a part of the self-made algoritm inside of the Windows optimization tool.

Device-defense popup malware may also be hidden in the advertisement somewhere on the odd site. Such websites are typically filled with bright and blinking ads, and their owners usually permit any kind of promos to be published on their page. Thus, clicking on such banners is a shot in the dark: only the advertisement contractor knows what will occur when you click this advertisement. Besides some “light” viruses, like adware or unwanted programs, you may likewise get something much more unsafe, like ransomware or coin miner; the substantial share of coin miners distribution is exactly after the malicious advertisements.

The statistic shows that people dislike popup advertising more than other types of promotions

Potentially undesirable programs, like Device-defense popup virus may cause a wide range of troubles on your PC. Distracting is not the single problem – pop-ups may show you the banners, where you are offered to download another strange program, or “a perfect security tool”. Scareware is usually distributed with the use of the last motto. Potentially undesirable applications, in turn, may have spyware functionality. And it is pretty hard to distinguish the undesirable app from a normal one, if you don’t know the exact names. Besides the PUPs and pseudo antiviruses, popup-related banners are also chosen as a spreading way by different trojan viruses, for instance – coin miners. The consequences of actions of such malware is 100% unwanted, and can cost you hundreds or even thousands of dollars. And even if you are not interacting with these ads, they may be clicked by whoever who also makes use of your computer – parents, children, spouse, etc. So the things may become much more serious, and it will be much harder to deal with it without data loss. It is recommended to get rid of the viruses with antivirus programs as soon as possible.

How can I get rid of Device-defense pop-up advertisements?

The tutorial of Device-defense adware elimination consists of 2 parts. First, we need to exterminate the malware, and then repair the consequences of its action. The elimination process is very easy, since it may be done even with using Microsoft Defender – anti-malware software that is available on all computers with Windows 8/10. However, due to its substantial resources utilization, along with some bugs that may be crucial for some kinds of users, Defender is often disabled by the users, so its use is likely impossible. Moreover, various trojan viruses are capable to switch off the embedded antivirus. It is better to use the separated program that will not have such vulnerabilities.

I’d advise you to use Gridinsoft Anti-Malware² – a well-proven anti-malware device that will definitely wipe out the viruses from your PC and also make an impenetrable shield with a Proactive protection function. However, let’s handle Device-defense adware first.

Removing Device-defense popup virus with GridinSoft Anti-Malware

• Download and install GridinSoft Anti-Malware. After the installation, you will be offered to perform the Standard Scan. Approve this action.

• Standard scan checks the logical disk where the system files are stored, together with the files of programs you have already installed. The scan lasts up to 6 minutes.

• When the scan is over, you may choose the action for each detected virus. For all files of Device-defense malware the default option is “Delete”. Press “Apply” to finish the malware removal.

Now, when the computer is clean of viruses, we can proceed to the browser reset. You can do this step manually, as well as with the use of GridinSoft Anti-Malware.

Reset browser settings to default

Manual method of browser reset

To reset Edge, do the following steps :

1. Open “Settings and more” tab in upper right corner, then find here “Settings” button. In the appeared menu, choose “Reset settings” option :

2. After picking the Reset Settings option, you will see the following menu, stating about the settings which will be reverted to original :

For Mozilla Firefox, do the next actions :

1. Open Menu tab (three strips in upper right corner) and click the “Help” button. In the appeared menu choose “troubleshooting information” :

2. In the next screen, find the “Refresh Firefox” option :

After choosing this option, you will see the next message :

If you use Google Chrome

1. Open Settings tab, find the “Advanced” button. In the extended tab choose the “Reset and clean up” button :

2. In the appeared list, click on the “Restore settings to their original defaults” :

3. Finally, you will see the window, where you can see all the settings which will be reset to default :

Opera can be reset in the next way

1. Open Settings menu by pressing the gear icon in the toolbar (left side of the browser window), then click “Advanced” option, and choose “Browser” button in the drop-down list. Scroll down, to the bottom of the settings menu. Find there “Restore settings to their original defaults” option :


2. After clicking the “Restore settings…” button, you will see the window, where all settings, which will be reset, are shown :

When the web browsers are reset, you need to make sure that your browser will be connected the accurate DNS while connecting to the web page you want. Create a text file titled “hosts” on your computer’s desktop, after that open it and fill it with the following lines³:

Find the hosts.txt file in C:/Windows/System32/drivers/etc directory. Rename this file to “hosts.old.txt” (to distinguish it from the new one), and then move the file you created on the desktop to this folder. Remove the hosts.old from this folder. Now you have your hosts file as good as new.

Nonetheless, there is one problem that makes things much more difficult to fix, especially without the anti-malware software. A lot of adware variations that are utilized to show you the Device-defense pop-up ads are adjusting the deep browser setups, disabling an access to the settings tab. So, if you attempt to change your browser settings after your PC was infected by pop-up-related malware, your browser will certainly collapse quickly. Sometimes, you will see no crash, however, large lag spike after pressing the “settings” key. Browser will stop reacting for ~ 30 seconds, and afterwards it will be back to the normal, till you try to open settings once more.

Reset your browser settings with GridinSoft Anti-Malware

To reset your browser with GridinSoft Anti-Malware, open the Tools tab, and click the “Reset browser settings” button.

You can see the list of the options for each browser. By default, they are set up in the manner which fits the majority of users. Press the “Reset” button (lower right corner). In a minute your browser will be as good as new.

The browser reset is recommended to perform through the antivirus tool by GridinSoft, because last is also able to reset the HOSTS file without any additional commands.

How to Remove Device-defense Pop-ups?

Name: Device-defense

Description: Device-defense - a lot of users became a target for the pop-up advertisements. I have a lot of friends who literally bombed me with the questions like “how to remove Device-defense.com push notifications?” or “why do Device-defense.com pop-ups keep appearing on Chrome even after AdBlock installation?”. In this article we will show you how to deal with Device-defense pop-ups, which may corrupt your browser’s correct performance, and create a lot of troubles while you are working.

Operating System: Windows

Application Category: Adware

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1. More about pop-up ads on Wikipedia.
2. GridinSoft Anti-Malware overview and the reasons why I advise it for malware elimination.
3. Official Microsoft guide for hosts file reset.