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Malware in its many forms presents one of the greatest threats to internet users today. Malicious software is a program designed to cause damage, access or monitor a computer, server or network without the users knowledge. These include viruses, worms, trojans, spyware, adware, rogueware, rootkits and other harmful or unwanted software or program. Depending on its type, malware can monitor internet activity, attempt to steal sensitive information, send spam, hijack a web browser redirecting search engine attempts and bombarding screen with pop-up advertisements as well as generally impairing computer´s performance. Learn more about the various malicious programs lurking on the internet, their history and presented threats in this book.

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