The world of malware and rootkits has evolved a lot over the last two years, the most significant developments have been in the sophistication of rootkits. In case the term "rootkit" doesn't mean much, a rootkit is basically a program that subverts the operating system, and allows the attacked to hide certain files and programs from the user. It usually will also provide a hidden backdoor into the system, and will hide network connections made through the backdoor from the user.

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