Remove “Detected: Trojan_BO8DF831059” Pop-up

Cyber scams are on the rise, and the perpetrators often pose as representatives of MacOS Support. The ruse begins with a browser redirect that directs the Mac user’s internet program to a deceptive pop-up website. Users that are tricked by this fraudulent pop-up wind up downloading a remote desktop application, which allows an attacker total access over the computer, in this case with the title “Detected: Trojan_BO8DF831059.”

How did it begin?

The message “Detected: Trojan_BO8DF831059” is typically displayed after visiting a malicious website that was designed to send out phony notifications and convince users to phone a bogus technical assistance service. The most frequent source of fake pop-ups is visiting websites, particularly those that engage in piracy.

In other instances, the pop-up or redirect is the result of an accidental installation of an adware program. Every time a web user browses the internet, this unwanted application changes the internet program to constantly display the pop-up.

The fake pop-up warning

Online con artists frequently utilize the tactic of displaying a “Detected: Trojan_BO8DF831059” pop-up window on a computer to make money by preying on the vulnerability of some Mac users. This pop-up’s message, which tries to persuade a Mac user to call a fake Mac support firm or download an app, is as follows:

Detected: Trojan_BO8DF831059
PC Scan Required


Detected: Trojan_BO8DF831059
Click Here to Turn On Antivirus

Screenshot of Trojan_BO8DF831059 Alert

The scam’s perpetrators will instruct Mac users to download and launch a remote desktop application once they are connected. The attackers can then take complete control of the computer and possibly pose a greater threat to the Mac operating system by doing this.

This “Detected: Trojan_BO8DF831059” scam would ultimately bill Mac users for the technical support service, as well as any additional fees that may apply for any installed security or optimization suites that were utilized to repair the Mac computer.

Procedures to Remove "Detected: Trojan_BO8DF831059" from Mac

This section contains comprehensive guide for Mac users. It will help you remove malicious browser hijacker from internet application.

Procedures on this page are written in a manner that can be easily understand and execute by Mac users.

Quick Fix - Scan the System with Combo Cleaner

Combo Cleaner is a trusted Mac utility application with complete antivirus and optimization features. It is useful in dealing with adware, malware, and PUP's. Moreover, it can get rid of malicious browser hijacker like "Detected: Trojan_BO8DF831059".

1. Download the tool from the following page:

2. Double-click the downloaded file and proceed with the installation.

3. In the opened window, drag and drop the Combo Cleaner icon onto your Applications folder icon.

Install Combo Cleaner

4. Open your Launchpad and click on the Combo Cleaner icon.

5. Wait until antivirus downloads its latest virus definition updates and click on "Start Combo Scan" to start removing "Detected: Trojan_BO8DF831059".

Combo Cleaner Scanner

To fully optimize the features of antivirus and privacy scanners, users may have to upgrade to the premium version.

Proceed with the rest of the removal steps if you are comfortable manually removing malicious objects associated with the threat.

Step 1 : Double-check with MBAM Tool for Mac

1. Download Malwarebytes Anti-malware for Mac from the link below.

2. Run Malwarebytes Anti-malware for Mac. It will check for updates and download if most recent version is available. This is necessary in finding recent malware threats including "Detected: Trojan_BO8DF831059".

3. If it prompts to close all running web browser, please do so. Thus, we advise you to PRINT this guide for your reference before going offline.

4. Once it opens the user interface, please click on Scan button to start scanning your Mac computer.

MBAM for Mac

5. After the scan, Malwarebytes Anti-malware for Mac will display a list of identified threats, "Detected: Trojan_BO8DF831059" is surely part of it. Be sure to select all items in the list. Then, click Remove button to clean the computer.

Check if your internet browser application is no longer being bothered by "Detected: Trojan_BO8DF831059". If the browser hijacker still persists, please continue with the steps below to reset internet programs to default settings.

Step 2 : Reset Internet Browser Program

Cleaning your internet browser from clutter and unwanted add-on/extension is a must when dealing with "Detected: Trojan_BO8DF831059" fake alert. The procedure below discuss on resetting various browsers to its default state.

Clear the Safari Internet Browser (Mac)

1. Open your Safari browser application.
2. In the Safari menu, click on Preferences from the drop-down list.
3. On Preferences window, please select the Privacy tab.
4. Click on Manage Website Data button.
5. Select unwanted/suspicious entry and click the Remove button. If you choose to Remove All, you may be logout from most visited websites and online services. Therefore, we advise to remove suspicious item one at a time to prevent changing behavior towards your favorite websites.
6. If it prompts, please confirm your actions.

7. Next, we will need to clear the Cache. Back at the Safari Preferences window, choose Advanced tab.
8. Navigate to the bottom and activate Show Develop menu in menu bar.
9. Go to Safari menu, choose on Develop from the drop down list and click on on Empty Caches.
10. Next thing to do is to restore the Homepage to your preference and remove the one from "Detected: Trojan_BO8DF831059" fake alert.
11. Back at the Safari Preferences window, click on General tab.
12. Under Homepage section, type your desired URL to be the default start-up page.
13. Lastly, make sure to have the right Search Engine.
14. Go back to Safari Preferences window and click on Search tab.
15. Select your desired Search tool under the Search engine section.
16. You may not restart Safari browser.

Restore Google Chrome to Default Settings

Resetting Google Chrome to default settings is helpful in deleting hard-to-remove extension that produces the "Detected: Trojan_BO8DF831059" scam alert. This method is highly advisable to perform if you have difficulty in removing unwanted extension.

1. Open Google Chrome Internet browser.
2. On the address bar, type chrome://settings/reset and press Enter key.
3. Under Reset and clean up section, choose Restore settings to their original defaults.
4. Click Reset settings button to clear all entries related to "Detected: Trojan_BO8DF831059" scam pop-up.
5. Close the existing tab and restart Google Chrome. That should have removed "Detected: Trojan_BO8DF831059" extension and associated objects.

Reset Mozilla Firefox to Default

This section describes how to remove unwanted extension from Firefox that may be related to "Detected: Trojan_BO8DF831059" fake pop-up alert. This process can fix many browser issues by restoring Firefox to factory settings without affecting your essential information (bookmarks, browsing history, passwords, and Internet cookies) on the browser. If you desire to remove only specific extension, please see manual removal of add-on from Firefox.

1. Input the string about:support on Firefox web address and press Enter on keyboard.
2. You will now see the Troubleshooting Information page of Mozilla Firefox.
3. You will notice a section on upper-right corner of the screen stating Give Firefox a tune up. Click the Refresh Firefox button.
4. If confirmation window appears, click Refresh Firefox to continue.
5. Firefox browser will close and start the resetting process. When done, it will display a list of restored data. "Detected: Trojan_BO8DF831059" fake alert should be gone by now. Click Finish to open a fresh version of Firefox.

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