All security related companies said that fake antivirus programs did increase a lot in the last few months. The main reason why these types of malicious products were highly developed in the last period of time is the fact that they represent an easy and efficient method for cyber delinquents to gain illicit benefits. They are also known as “scareware”. They are usually found on “eye candy” web pages and they will compromise the user’s system with many various spyware. So a name of such application is “Trust Doctor”. This program will automatically install itself on your computer after you got infected by Trojans. Once on your computer, Trust Doctor will do a fake system scan of your system, checking for threats. You will see a long list of various threats found on your PC and this spyware will say you will need to purchase the registered version if you want full protection on your system. Check here How to Remove Trust Doctor to learn how to remove Trust Doctor from your PC.

Those hackers behind those kind of viruses are but criminals with very good experience in programming. They work in groups, like an organization and are very effective like many similar 100% legit organization. They do have people programming, others testing and others doing the marketing. No matter the malware scheme they use to create and increase the efficiency of viruses similar to Trust Doctor, one thing is sure: they are all taking advantage of the lack of IT knowledge of the common users and profit from their credulity. This site Malware Removal has very good infos about virus removal.

Shortly after infecting a computer, this malware will do whatever is needed so more viruses and similar threats will infect the given PC. This is the way that more and more viruses (and other threats) are infecting the PC the moment this threat is doing its fake system scan after having infected the computer. The infected PC will start sending spam to others computers and will try more attacks, like the Denial of Service (DoS) one.

This very bad program, as any similar fake security related applications, is really not a good program as it will become bigger and it will infect more PC. Given what we just talked about, PC users need to get informed the most they can about such threats, this is their best line of defense.