Internet is not free from threats , mainly from malicious software .Even though you never click to download the software, the software can be automatically downloaded and installed onto your PC. This happens to many.Such malicious Crimeware include programs which may be classified as bots, keystroke loggers, spyware, backdoors and Trojan horses.Some programs that are installed that way are difficulty to detect and remove by conventional antivirus solutions. The applications use bogus alerts and security messages to scare the computer user into immediate action.
Norton Power Eraser is a free tool for the Windows .It has been designed to remove deeply embedded and difficult to remove malicious software from a computer system.. It can detect crimeware such as rogue antivirus programs that are being used to trick the user into either downloading threats to the PC or to pay money for threats that are not existing at all. Power Eraser does not require installation.
Download : Norton Power Eraser| Os:Windows 7, Vista and XP| 5.13MB |Freeware
Warning:This tool is intended to be a measure of last resort. Use it only after everything else has failed. It will almost inevitably detect a few innocuous programs and files due to its aggressive nature.