Definition of rootkit
: a malicious piece of software that grants a remote operator complete access to a computer system Rootkits maliciously change a computer's operating system without a user's knowledge and then cover up their tracks. The hacker who installed the rootkit is then able to monitor the infected computer and use it to launch other attacks. — Andrea Caumont
Recent Examples of rootkit from the Web
Consider what happened in 2005, when Sony BMG started selling CDs laden with the notorious Sony rootkit, software designed to covertly prevent people from copying music files.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'rootkit.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
First Known Use of rootkit
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