American English

Definition of keylogger noun from the Oxford Advanced American Dictionary



, NAmE//ˈkiˌlɑɡər//
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a computer program that records all the keys that a user hits so that it is possible to discover secret information such as code words It's the keylogger used by secret services worldwide. Keyloggers may be used by employers to check on their employees. Keylogger spy software tracks all activity on the computer.
See the Oxford Advanced Learner's Dictionary entry: keylogger