Security Tool is a very bad malware that is but a clone from another called Total Security 2009. Using criminal methods (scam ones), this program will try to trick you into buying its full and totally fake version. The main method this program will use is to scare you with fake notifications, and fake popups. Check here Security Tool Removal to learn how to remove Security tool.

Security Tool gets installed on user systems via Trojans that get downloaded from fake websites which promote on-line web scanners which are, in reality, fake. Then these Trojans will hijack your web browser. You will be redirected to automatic download links that will download (and install) Security Tool. Another method that Security Tool uses to invade user systems is to redirect the user to 2tvtube.com or a2tv.com which are both fake websites. On these sites, the user will be asked to download a video codec which appears to be a Flash codec. What will happen the moment you will try to download that file is that you will rather download and install… Security Tool. Anothe way used to install that spyware is to redirect the end-user to a given webpage with a title as “My Computer Online Scan”, That site will pretend to be an online system scan of My Computer. This scan will return results that state that the My Computer folder is infected with dangerous malware and the user will be given a prompt with the options Yes and No. No matter what you choose, the result will be the same: you will automatically download and install Security Tool on your PC. This site Remove Security Tool Windows 7 has all the infos you do need if you want to remove Security Tool when having Windows 7 on your PC while here Security Tool Removal you will learn how to remove Security Tool.

After infecting a PC, this malware will load itself in memory every time you do login on Windows, then it will do some fake system scan of your computer. It will then show lots of alerts and notifications saying that your PC has been infected with lots of spyware. Here are some example of alerts you will get: “Your Computer is infected” or “Warning! 55 viruses found!”. Sometimes it will warn about the web browser as well with such messages as Spyware.IEMonster activity detected.

Such malware will also try to steal personal infos (like passwords) from your IE, Firefox, Outlook and others applications. Others possibilities include warnings like “Click here to remove it immediately with Security Tool’ or “Security Tool Warning: Some critical system files of your computer were modified by malicious program”. It may cause system instability and data loss. Click here to block unauthorized modification by removing threats (Recommended). Sometimes your computer system might not be able to detect USB flash drives being connected to your PC mostly because Security Tool won’t allow it. The moment this threat has infected your PC, you will get lots of warning pop-ups on your Windows Taskbar.

So the moment you want to take into account what Security Tool is telling you and you are ready to clean your PC, this malware will say that the actual version you have is but a trial one that cannot remove all those threats and that you need to upgrade to the full version (a paying one). However, no matter how much the user may pay for this license, the so-called full version of Security Tool is completely incapable of cleaning out any threats from the computer, as the threats were false in the first place. So it more than important not to fall into this trap.
The best way to remove Security Tool is to use a legitimate antivirus program or reputed web service which scans and cleans your computer.