They usually invade computer networks due to faulty computer security and low network security. Here is more on the different forms that malware can come in. The status of malware is usually given to a software based upon the perceived intention of the writer of such a program. While most of us have faced this situation, and many among these ‘most’ have actually gone through the harrowing experience of setting things right after their computers have been invaded, the exact facts and information regarding malware is still a bit obscure. While we all know that it relates to wicked programs and software designed to stealthily access our computers and cause considerable damage in terms of data stealth and system corruption, such knowledge is, at best, generic. Removal could be quite a time-consuming task if the infection has spread. However, unlike a virus, a worm does not need to attach itself to an existing program, and the replication can take place even without user intervention. These are advertising-supported software which automatically play or download advertisements to the computer, and in doing so, expose the computer to spy ware and other privacy invasive programs and software. However, under this guise of utility, Trojan horses make way for unauthorized access to the user’s system. As the name suggests, these are installed on the user’s computer system to spy upon user information without the latter’s knowledge.
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