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Danger level 6
Type: Trojans
Common infection symptoms:
  • Annoying Pop-up's
  • Blocks internet connection
  • Connects to the internet without permission
  • Installs itself without permissions
  • Normal system programs crash immediatelly
  • Shows commercial adverts
  • Slow Computer
  • Slow internet connection
  • System crashes


Defmid is an interesting example of a computer malware, because even though it is actually a Trojan, it behaves like a rogue antispyware application. When you get infected with this parasite, it sends you fake security messages, saying that you need to purchase a specific program to get rid of “problems” that actually do not even exist. Since Defmid pretends to be a rogue program, it might display a variety of names, including: Antivirus Center, System Defender, Internet Protection and Antivirus Pro. In a way, this computer threat makes it easier for you to deal with it, because it has an actual interface, and you can see the messages that it shows. For example:

Your system has come under attack of harmful software. Click here to deactivate it.
External software tries to control variety of your system files. This may lead to breaking of some data in your system. Click here to protect remote access to your PC & delete these programs.

Needless to say, that you should not click on these pop-up messages, because you would be redirected to a website related to Defmid, and there you would be asked to fill in the purchase form with such information as your credit card number, its expiration date and so on. Were you to expose this information to the cyber criminals who have created Defmid, you would be robbed in no time. Thus you must ignore these messages at all cost.

As far as the installation is concerned, since Defmid comes with a number of different components, the installation process differs every single time. Usually, the components that come with Defmid download or drop the DLL that displays a dialog box on your screen which says that a security program is being installed automatically. Then it takes the appearance of a rogue and floods the user with multiple fake security notices.

Defmid can also easily add itself to the Windows Security Center, and block you from opening certain websites saying that “Your query looks similar to automated requests from a spyware application”. It means that Defmid wants to stay in your computer for as long as possible. This computer threat can also connect to the internet without your permission and download arbitrary files that it executes later on. Thus it can be established that this malware is threatening not only your computer, but your financial funds as well, so you need to remove Defmid from your computer as soon as you notice the first symptoms of the infection. If you are not sure how to perform the removal on your own, invest in a reliable security tool that will do it automatically for you.

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How to manually remove Defmid

Files associated with Defmid infection:


Defmid processes to kill:


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