There are several malicious programs that are floating on the net that steal away your passwords. These programs keep a log of every key that is pressed while entering passwords or credit card numbers. These programs make use of windows hooks to trap every key that is pressed. With the knowledge that you have gained from the past three programs this may not be a big deal.
However, such key logger programs deviate from the ones that we developed in three fundamental ways:
(a) They do not pop any window on the screen; otherwise the program’s presence would get detected.
(b) These programs also hide themselves from the Task Manager so that the user cannot terminate them.
(c) The logged keys are secretly sent over the net to the malicious users who write such programs. Once the logged keys are known it would be possible to break into the system
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