anti spywares that should not be in your computer(4)

False positives
A common method used by rogue security software makers use is that of intentional false positives. A false positive is a fake or false malware detection in a computer scan. This attempts to convince even advanced users (who may not be deceived by previous methods) that their computer is infected. There are two variants of this method. Some rogue software creates a list of non-existent files and infections. Others select files from the computer at random, including valid clean system files. In a few rare instances, the "full" version of the rogue program actually attempts to remove these files, damaging the system.
These intentional false positives should be differentiated from an accidental false positive, which can occur in a scan by real legitimate security software.
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