Many PC users have the bad luck to unwillingly install a fake antivirus when browsing the web. These programs get automatically installed by Trojans and trick people into thinking that their PC was infected and needs protection. Once on your computer, theses spyware will do some fake computer scan. They will also do changes to files part of your system, claiming they are but deleting viruses. Lots of similar programs, like Defence Lab, can be found on the Internet. When it comes to removing it and other similar applications, you will need not only to use a very good anti virus tool, but also to have some knowledge on what their actions are and how to protect the PC from them. Here How to Remove Defence Lab you will find more infos about this threat.
The actions of Defence Lab go in two directions: the application affects the computer, slowing down its performance, and it also sometimes gets to steal money form the PC user. This spyware was designed to look like a real antivirus program besides having the same functions. So lots of PC users will indeed believe they are dealing with a real antivirus product. When this malware will tell you to buy a full version of it so you can remove all the viruses part of your PC, some end-users will purchase this useless and non-working scam product. This site online virus removal is a great online service dedicated to remove any problems found on your computer, while this one virus protection will tell you how to remove malware.
To remove with easy and without problems this threat from your computer system, you can find on the Internet many great automatic tools for that. If you have doubs whether such programs are safe or not or how to use it, then you can try to clean your PC manually from this virus, but you will face 2 problems. First, you might, doing so, delete some useful files from your computer, doing so will damage even more your computer. Secondly, even if you think that you successfully removed all Defence Lab related files, some could still function on the system without you knowing about this. So your best option is still to use a good automatic application rather than doing some manual deletion if you are not experienced with PCs.