Remove Security Defender (Uninstall Guide)

  • February 10, 2011
  • 08:53 PM
  • Read 100,649 times

What is Security Defender?

Security Defender is a rogue anti-spyware program that displays fake scan results and security alerts on your computer in order to scare you into purchasing it. This program is typically installed on to your computer through the use of web sites that display advertisements pretending to be an online anti-malware scanner. When this advertisement has finished, it will state that your computer is infected and then prompt you to download and install Security Defender onto your computer.

  • Security Defender screen shot
  • Scanning screen
  • Scan results
  • Fake firewall alert
  • Fake Firewall alert 2
  • Fake Security Alert
  • Installer
  • Scan alert

When installed, Security Defender will be configured to start automatically when Windows starts. Once started, it will scan your computer and list numerous infections, but when you attempt to remove any of them it will state that you first need to purchase the program. As all of the infections it states are present on your computer are false, please ignore anything that it displays and do not purchase the program.

While the program is running it will also display a continuous stream of fake security alerts on your computer that are designed to make you think that your computer has a severe security problem. The text of some of these alerts include:

Security Defender Firewall Alert
Suspicious activity in your registry system space was detected. Rogue malware detected in your system. Data leaks and system damage are possible. Please use a deep scan option.

Harmful software detected
Security Defender has detected malicious software that may cause crash of your computer. Click Remove All button to remove them now.

Security Defender
Viruses have been found in your system. We highly recommend you to get license for Security Defender to remove immediately harmful software.

Just like the fake scan results, these alerts are also fake and are only being used to scare you into purchasing the program. Therefore, please ignore them.

Without a doubt, Security Defender was created to scare you into thinking your computer has a severe security problem so that you will then purchase this program. For no reason should you purchase Security Defender, and if you already have, you should contact your credit card company and dispute the charges stating that the program is a computer infection and a scam. Finally, to remove this infection and other related malware, please use the removal guide below.

Security Defender Removal Options

Self Help Guide

This guide is intended for advanced computer users only. Please ensure your data is backed up before proceeding. If you’re uncomfortable making changes to your computer, consider having a professional help clean your computer or ask in the forums.
  1. Print out these instructions as we may need to close every window that is open later in the fix.

  2. It is possible that the infection you are trying to remove will not allow you to download files on the infected computer. If this is the case, then you will need to download the files requested in this guide on another computer and then transfer them to the infected computer. You can transfer the files via a CD/DVD, external drive, or USB flash drive.

  3. Before we can do anything we must first end the processes that belong to Security Defender so that it does not interfere with the cleaning procedure. To do this, please download RKill to your desktop from the following link.

    RKill Download Link - (Download page will open in a new tab or browser window.)

    When at the download page, click on the Download Now button labeled iExplore.exe download link. When you are prompted where to save it, please save it on your desktop.

  4. Once it is downloaded, double-click on the iExplore.exe icon in order to automatically attempt to stop any processes associated with Security Defender and other Rogue programs. Please be patient while the program looks for various malware programs and ends them. When it has finished, the black window will automatically close and you can continue with the next step. If you get a message that RKill is an infection, do not be concerned. This message is just a fake warning given by Security Defender when it terminates programs that may potentially remove it. If you run into these infections warnings that close RKill, a trick is to leave the warning on the screen and then run RKill again. By not closing the warning, this typically will allow you to bypass the malware trying to protect itself so that rkill can terminate Security Defender . So, please try running RKill until the malware is no longer running. You will then be able to proceed with the rest of the guide. If you continue having problems running RKill, you can download the other renamed versions of RKill from the rkill download page. All of the files are renamed copies of RKill, which you can try instead. Please note that the download page will open in a new browser window or tab.

    Do not reboot your computer after running RKill as the malware programs will start again.

  5. At this point you should download Malwarebytes Anti-Malware, or MBAM, to scan your computer for any any infections or adware that may be present. Please download Malwarebytes from the following location and save it to your desktop:

    Malwarebytes Anti-Malware Download Link (Download page will open in a new window)

  6. Once downloaded, close all programs and Windows on your computer, including this one.

  7. Double-click on the icon on your desktop named mbam-setup.exe. This will start the installation of MBAM onto your computer.

  8. When the installation begins, keep following the prompts in order to continue with the installation process. Do not make any changes to default settings and when the program has finished installing, make sure you leave Launch Malwarebytes Anti-Malware checked. Then click on the Finish button. If MalwareBytes prompts you to reboot, please do not do so.

  9. MBAM will now start and you will be at the main screen as shown below.

    Malwarebytes Anti-Malware

    Please click on the Scan Now button to start the scan. If there is an update available for Malwarebytes it will automatically download and install it before performing the scan.

  10. MBAM will now start scanning your computer for malware. This process can take quite a while, so we suggest you do something else and periodically check on the status of the scan to see when it is finished.

    Malwarebytes Anti-Malware

  11. When MBAM is finished scanning it will display a screen that displays any malware that it has detected. Please note that the infections found may be different than what is shown in the image below due to the guide being updated for newer versions of MBAM.

    MalwareBytes Scan Results

    You should now click on the Remove Selected button to remove all the seleted malware. MBAM will now delete all of the files and registry keys and add them to the programs quarantine. When removing the files, MBAM may require a reboot in order to remove some of them. If it displays a message stating that it needs to reboot, please allow it to do so. Once your computer has rebooted, and you are logged in, please continue with the rest of the steps.

  12. You can now exit the MBAM program.

  13. As many rogues and other malware are installed through vulnerabilities found in out-dated and insecure programs, it is strongly suggested that you use Secunia PSI to scan for vulnerable programs on your computer. A tutorial on how to use Secunia PSI to scan for vulnerable programs can be found here:

    How to detect vulnerable and out-dated programs using Secunia Personal Software Inspector


Your computer should now be free of the Security Defender program. If your current anti-virus solution let this infection through, you may want to consider purchasing the PRO version of Malwarebytes Anti-Malware to protect against these types of threats in the future.

View Associated Security Defender Files

c:\Documents and Settings\All Users\Application Data\56a10a26-dc02-40f3-a4da-8fa92d06b357_.mkv c:\Documents and Settings\All Users\Application Data\56a10a26-dc02-40f3-a4da-8fa92d06b357_33.avi c:\Documents and Settings\All Users\Application Data\56a10a26-dc02-40f3-a4da-8fa92d06b357_33.ico c:\Documents and Settings\All Users\Start Menu\Programs\Startup\56a10a26-dc02-40f3-a4da-8fa92d06b357_33.lnk c:\Program Files\Security Defender c:\Program Files\Security Defender\Security Defender.dll %UserProfile%\Application Data\Microsoft\Internet Explorer\Quick Launch\Security Defender.lnk %UserProfile%\Desktop\Security Defender.lnk %UserProfile%\Start Menu\Programs\Startup\56a10a26-dc02-40f3-a4da-8fa92d06b357_33.lnk %Temp%\<random>.dll

View Associated Security Defender Registry Information

HKEY_CLASSES_ROOT\CLSID\{56a10a26-dc02-40f1-a4da-8fa92d06b357} HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{56a10a26-dc02-40f1-a4da-8fa92d06b357} HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run "56a10a26-dc02-40f3-a4da-8fa92d06b357_33" HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run "56a10a26-dc02-40f3-a4da-8fa92d06b357_33"

This is a self-help guide. Use at your own risk. can not be held responsible for problems that may occur by using this information. If you would like help with any of these fixes, you can ask for malware removal assistance in our Virus,Trojan,Spyware, and Malware Removal Logs forum.

If you have any questions about this self-help guide then please post those questions in our Am I infected? What do I do? and someone will help you.

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