2012 Update: there are new versions of this tool called: System Tool 2011 and System Tool 2012.
System Tool is a rogue security program from the same family as Security Tool. It pretends to be a legitimate antivirus program, but actually it is nothing more but a scam which may also be called System Tool 2011 or System Tool 2.20. The rogue program is distributed through the use of fake online scanners, bogus websites and other malicious software. Once installed, it will pretend to scan your computer for malware and then it will state that your computer is infected with spyware, adware, Trojans and other viruses. Finally, it will prompt you to pay for a full version of the program to remove supposedly found infections from your computer. It uses the same payment pages as Security Tool virus. Don't pay for this rogue program. It won't protect your computer. Instead, please remove System Tool 2011 from your computer immediately. Please use the removal instructions outlined below. You can choose to remove this virus manually or using an automatic System Tool removal tool.
SystemTool 2011 scareware is a very annoying rogue program because it displays fake security alerts and popups like every one or two minutes. What is more, it will block nearly all programs on your computer claiming that they are infected with some sort of malware. The fake error message reads:
It will constantly display fake security warnings about serious security and privacy problems. It will even state that your files can be deleted or your credit card information can be stolen. That's not true. System is a just another rogue, it won't delete your files. Don't worry. The text of these messages include:
Last, but not least, it will change the background of your dekstop with its own which states that your computer is infected with spyware. The text of the fake background image:
As you can see, System Tool 2011 is yet another rogue scam. Don't trust it. If you find that your computer has been infected with this rogue program then please uninstall System Tool from your computer as soon as possible. If you have already purchased it, then you should contact your credit card company and dispute the charges. Then, please follow the removal instructions below. Note, that you will have to reboot your computer in safe mode with networking in order to be able to download the automatic removal tool because System blocks legitimate malware removal tools in normal mode.