Definition of "rootkit" [rootkit]

• A set of software tools used by a third party after gaining access to a computer system in order to conceal the altering of files, or processes being executed by the third party without the user's knowledge. (noun)
• To infect (a computer system) with a rootkit. (verb)

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• "The term rootkit is used to define a Trojan (or technology) used to hide the presence of a malicious object (process, file, registry key, network port) from the computer user or"
• "The term rootkit is used to define a Trojan (or technology) used to hide the presence of a malicious object (process, file, registry key, network port) from the computer user or administrator."
• "All a rootkit is capable of doing is hiding something from the windows api."