K - Definitions
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K
Kerberos
Kerberos is a protocol for authenticating service requests between trusted hosts across an untrusted network, such as the internet.
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key fob
A key fob is a small, programmable device that provides access to a physical object.
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keylogger (keystroke logger or system monitor)
A keylogger, sometimes called a keystroke logger, is a type of surveillance technology used to monitor and record each keystroke on a specific device, such as a computer or smartphone.
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knowledge-based authentication
Knowledge-based authentication (KBA) is an authentication method in which users are asked to answer at least one secret question.