Mac Virus

Remove “Dear BT Customer Congratulations” Pop up “Virus” (Mac Guide)

Parasite may reinstall itself multiple times if you don't delete its core files. We recommend downloading ComboCleaner to scan for malicious programs installed with it. This may save you hours and cut down your time to about 15 minutes. 

Download ComboCleaner Anti-Malware

More information about ComboCleaner and steps to uninstall. Please review ComboCleaner's EULA and Privacy Policy. Keep in mind, only ComboCleaner’s scanner is free. If it detects a malware, you'll need to purchase its full version to remove it.

“Dear BT Customer Congratulations”

One of the most common sources of browsing irritation in Safari, Chrome, Firefox and other browsers are the online advertisements. They come in all shapes and sizes, cover a big portion of your screen and keep nagging you to click on them, to buy something, go to some site, play some online game, etc. Normally, it’s the sites you visit that are responsible for this type of irritation. However, it is also possible that an application inside your own browser is what makes the ads appear on your screen. Applications that can cause that are ones that belong to categories such as adware and browser hijackers.

“Dear BT Customer Congratulations” Pop up

Here, we will tell you about an app named “Dear BT Customer Congratulations” Pop up which is one particularly irritating browser hijacker. It can spam you with page-redirects, pop-ups, ads and other commercial messages and even replace important browser elements like the default search engine, homepage and new-tab page URL’s as well as add new browser extensions, toolbar buttons and more. The intrusiveness brought by those changes and by the annoying ads is what normally makes most users wish they could remove the irritating browser hijacker. However, doing this would typically not be all that easy. Most programs are not difficult to uninstall as they normally have an uninstallation manager or could at least be removed from the Control Panel. And if you want to get rid of a regular browser extension, you could do so from the list of add-ons inside your browser. However, since a browser hijacker like “Dear BT Customer Congratulations” makes money from the ads, the longer it is able to stay in your computer, the higher the profit for its creator. This is why these pieces of software are specifically made difficult to uninstall. In some cases, they may even come back to bother you after you have seemingly managed to remove them. Still, there are ways to handle this predicament and one such way is by following the steps in the guide that we have prepared for you below.

Even though this sort of software elements may seem to be dangerous and sketchy, they are actually much less problematic compared to a Ransomware cryptovirus infection, a Spyware or a Trojan Horse. In most cases, the hijackers are more annoying and less harmful than real malware programs like the ones we have just mentioned. Because of this, there is no reason to be overly worried about the safety of your computer if “Dear BT Customer Congratulations” is bothering you right now. You should, of course, still remove the hijacker because its advertisements may not always originate from the most trustworthy of sources and this may sometimes lead to security risks. However, “Dear BT Customer Congratulations” itself isn’t programmed to attack your system, lock up or steal your files or keep tabs on everything you are doing on your computer. Still, in order to reduce the possibility of encountering a malicious program that could actually do such things – a Trojan, or a Ransomware or some other malware infection, it’s best if you liberate your browsing program from the pesky hijacker and, in this way, bring things back to normal.


Name “Dear BT Customer Congratulations”
Type  Browser Hijacker
Danger Level Medium (nowhere near threats like Ransomware, but still a security risk)
Symptoms  The presence of a hijacker in the browser will likely trigger the generation of invasive ads and page-redirects.
Distribution Method  The methods normally used for this task are malvertising, spam and program bundling.
Detection Tool

Remove “Dear BT Customer Congratulations” Pop up “Virus”


We get asked this a lot, so we are putting it here: Removing parasite manually may take hours and damage your system in the process. We recommend downloading ComboCleaner to see if it can detect parasite files for you.

The first thing you need to do is to Quit Safari (if it is opened). If you have trouble closing it normally, you may need to Force Quit Safari:

You can choose the Apple menu and click on Force Quit.

Alternatively you can simultaneously press (the Command key situated next to the space bar), Option (the key right next to it) and Escape (the key located at the upper left corner of your keyboard).

If you have done it right a dialog box titled Force Quit Applications will open up.

In this new dialog window select Safari, then press the Force Quit button, then confirm with Force Quit again.

Close the dialog box/window.



To remove parasite on your own, you may have to meddle with system files and registries. If you were to do this, you need to be extremely careful, because you may damage your system.

If you want to avoid the risk, we recommend downloading ComboCleaner
a professional malware removal tool.

More information on ComboCleaner, steps to uninstallEULA, and Privacy Policy.

Start Activity Monitor by opening up Finder, then proceed to activity-monitor

Once there, look at all the processes: if you believe any of them are hijacking your results, or are part of the problem, highlight the process with your mouse, then click the “i” button at the top. This will open up the following box:


Now click on Sample at the bottom:


Do this for all processes you believe are part of the threat, and run any suspicious files in our online virus scanner, then delete the malicious files:

Drag and Drop Files Here to Scan
Maximum file size: 128MB.

This scanner is free and will always remain free for our website's users. You can find its full-page version at:

Scan Results

Virus Scanner Result


The next step is to safely launch Safari again. Press and hold the Shift key while relaunching Safari. This will prevent Safari’s previously opened pages from loading again. Once Safari is opened up, you can release the Shift key.

On the off chance that you are still having trouble with scripts interrupting the closing of unwanted pages in Safari, you may need to take some additional measures.

First, Force Quit Safari again.

Now if you are using a Wi-Fi connection turn it off by selecting Wi-Fi off in you Mac’s Menu. If you are using a cable internet (Ethernet connection), disconnect the Ethernet cable.


Re-Launch Safari but don’t forget to press and hold the Shift button while doing it, so no previous pages can be opened up. Now, Click on Preferences in the Safari menu,

Preferences in Safari

and then again on the Extensions tab,

extensions in safari

Select and Uninstall any extensions that you don’t recognize by clicking on the Uninstall button. If you are not sure and don’t want to take any risks you can safely uninstall all extensions, none are required for normal system operation.

The threat has likely infected all of your browsers. The instructions below need to be applied for all browsers you are using.

Again select Preferences in the Safari Menu, but this time click on the Privacy tab,
Privacy in Safari

Now click on Remove All Website Data, confirm with Remove Now. Keep in mind that after you do this all stored website data will be deleted. You will need to sign-in again for all websites that require any form of authentication.

Still in the Preferences menu, hit the General tab

General Tab in Safari

Check if your Homepage is the one you have selected, if not change it to whatever you prefer.
Default Home Page

Select the History menu this time, and click on Clear History. This way you will prevent accidentally opening a problematic web page again.

firefox-512 How to Remove “Dear BT Customer Congratulations” From Firefox in OSX:

Open Firefoxclick on mozilla menu (top right) ——-> Add-onsHit Extensions next.

pic 6

The problem should be lurking somewhere around here –  Remove it. Then Refresh Your Firefox Settings.

chrome-logo-transparent-backgroundHow to Remove “Dear BT Customer Congratulations” From Chrome in OSX:

 Start Chrome, click chrome menu icon —–>More Tools —–> Extensions. There,  find the malware and  select  chrome-trash-icon.

pic 8

 Click chrome menu icon again, and proceed to Settings —> Search, the fourth tab, select Manage Search Engines.  Delete everything but the search engines you normally use. After that Reset Your Chrome Settings.

If the guide doesn’t help, download the anti-virus program we recommended or try our free online virus scanner. Also, you can always ask us in the comments for help!

Leave a Comment