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Danger level 9
Type: Trojans
Common infection symptoms:
  • Installs itself without permissions
  • Connects to the internet without permission
  • Shows commercial adverts
  • Slow internet connection
  • Annoying Pop-up's
  • Slow Computer
Other mutations known as:

Critical System Warning!

Critical System Warning! is a very malicious pop up which will drive you mad. You need to know that although Critical System Warning! may appear like an authentic warning message the truth of the matter is that it is actually a tactic which is used by the malicious A-Fast Antivirus rogue antispyware application, in order to try and trick innocent users into buying the malicious and deceptive A-Fast Antivirus rogue. At the end of the day it is going to be within your best inertest to never download, install or purchase anything associated to the malicious A-Fast Antivirus.

The truth is that the moment A-Fast Antivirus is installed and activated on your computer system, the following message will start. This specific pop up message will appear as follows:

Critical System Warning!
Your system is infected with a version of TRojan-Spy.Htm;.Visafraud.a. This may result in website access passwords being stolen from Internet Explorer, Mozilla Firefox, Outlook etc.Click Yes to scan and remove threats (recommended)."


Once your computer displays the following symptoms then this can be seen as a sign to you that your computer system is infected:

•Is your computers performance slower than usual?
•Are you receiving annoying pop ups?
•Are things changing on your machine, that you didn't change yourself?
•Do you see a scan report that has taken place, which you didn't start?
•Are you receiving fake scan report results?
•Is your computer generating scary system security notifications?
•Are you being asked to buy a full version in order to rectify these problems?
•Is your internet connection acting differently to usual?

A-Fast Antivirus is very malicious and cannot be trusted. The best thing which you can do is to remove A-Fast Antivirus upon immediate detection with the use of a decent and effective antispyware removal tool. It is going to be within your best interest to not attempt the manual removal process due to the factor that it will result in all types of additional computer problems.

Download Spyware Removal Tool to Remove* Critical System Warning!
  • Quick & tested solution for Critical System Warning! removal.
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